CVE-2026-4282

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-4282", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-03-16T15:53:24.993Z", "datePublished": "2026-04-02T12:44:52.941Z", "dateUpdated": "2026-07-15T00:56:46.658Z"}, "containers": {"cna": {"title": "Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhbk/keycloak-operator-bundle", "defaultStatus": "affected", "versions": [{"version": "26.2.15-1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"]}, {"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhbk/keycloak-rhel9", "defaultStatus": "affected", "versions": [{"version": "26.2-18", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"]}, {"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhbk/keycloak-rhel9-operator", "defaultStatus": "affected", "versions": [{"version": "26.2-18", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"]}, {"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2.15", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"]}, {"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhbk/keycloak-operator-bundle", "defaultStatus": "affected", "versions": [{"version": "26.4.11-1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"]}, {"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhbk/keycloak-rhel9", "defaultStatus": "affected", "versions": [{"version": "26.4-14", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"]}, {"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhbk/keycloak-rhel9-operator", "defaultStatus": "affected", "versions": [{"version": "26.4-14", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"]}, {"vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4.11", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"]}], "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:6475", "name": "RHSA-2026:6475", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6476", "name": "RHSA-2026:6476", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6477", "name": "RHSA-2026:6477", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6478", "name": "RHSA-2026:6478", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2026-4282", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061", "name": "RHBZ#2448061", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-04-02T12:30:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-653", "description": "Improper Isolation or Compartmentalization", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-653: Improper Isolation or Compartmentalization", "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "timeline": [{"lang": "en", "time": "2026-03-16T15:53:57.767Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-04-02T12:30:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank chungkn (OneMount Group) for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-04-07T11:27:33.522Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-02T14:23:22.750489Z", "id": "CVE-2026-4282", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-02T14:24:41.770Z"}}, {"affected": [{"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-operator-bundle", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2.15-1", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2-18", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9-operator", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2-18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.2.15", "vendor": "Red Hat"}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-operator-bundle", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4.11-1", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4-14", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9-operator", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4-14", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.4.11", "vendor": "Red Hat"}], "datePublic": "2026-04-02T12:30:00.000Z", "descriptions": [{"lang": "en", "value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."}], "metrics": [{"other": {"content": {"namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "format": "CVSS"}], "problemTypes": [{"descriptions": [{"cweId": "CWE-653", "description": "Improper Isolation or Compartmentalization", "lang": "en", "type": "CWE"}]}], "references": [{"tags": ["vdb-entry", "x_refsource_REDHAT"], "url": "https://access.redhat.com/security/cve/CVE-2026-4282"}, {"name": "RHBZ#2448061", "tags": ["issue-tracking", "x_refsource_REDHAT"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"}, {"tags": ["x_sadp-csaf-vex"], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:6476"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:6478"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:6475"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:6477"}], "solutions": [{"lang": "en", "value": "RHSA-2026:6476: Red Hat build of Keycloak 26.2"}, {"lang": "en", "value": "RHSA-2026:6478: Red Hat build of Keycloak 26.4"}, {"lang": "en", "value": "RHSA-2026:6475: Red Hat build of Keycloak 26.2.15"}, {"lang": "en", "value": "RHSA-2026:6477: Red Hat build of Keycloak 26.4.11"}], "timeline": [{"lang": "en", "time": "2026-03-16T15:53:57.767Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-04-02T12:30:00.000Z", "value": "Made public."}], "title": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw", "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "x_adpType": "supplier", "x_generator": {"engine": "sadp-cli 1.0.0"}, "providerMetadata": {"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-15T00:56:46.658Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw", "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2.15", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4.11", "defaultStatus": "affected"}], "timeline": [{"lang": "en", "time": "2026-03-16T15:53:57.767Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-04-02T12:30:00.000Z", "value": "Made public."}], "solutions": [{"lang": "en", "value": "RHSA-2026:6476: Red Hat build of Keycloak 26.2"}, {"lang": "en", "value": "RHSA-2026:6478: Red Hat build of Keycloak 26.4"}, {"lang": "en", "value": "RHSA-2026:6475: Red Hat build of Keycloak 26.2.15"}, {"lang": "en", "value": "RHSA-2026:6477: Red Hat build of Keycloak 26.4.11"}], "x_adpType": "supplier", "datePublic": "2026-04-02T12:30:00.000Z", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-4282", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061", "name": "RHBZ#2448061", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json", "tags": ["x_sadp-csaf-vex"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6476", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6478", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6475", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6477", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}], "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "x_generator": {"engine": "sadp-cli 1.0.0"}, "descriptions": [{"lang": "en", "value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-653", "description": "Improper Isolation or Compartmentalization"}]}], "providerMetadata": {"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-06-30T03:19:07.728Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-4282", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-02T14:23:22.750489Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-02T14:23:43.727Z"}}], "cna": {"title": "Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw", "credits": [{"lang": "en", "value": "Red Hat would like to thank chungkn (OneMount Group) for reporting this issue."}], "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2", "versions": [{"status": "unaffected", "version": "26.2.15-1", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhbk/keycloak-operator-bundle", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2", "versions": [{"status": "unaffected", "version": "26.2-18", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhbk/keycloak-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2", "versions": [{"status": "unaffected", "version": "26.2-18", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhbk/keycloak-rhel9-operator", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.2.15", "packageName": "rhbk/keycloak-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4", "versions": [{"status": "unaffected", "version": "26.4.11-1", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhbk/keycloak-operator-bundle", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4", "versions": [{"status": "unaffected", "version": "26.4-14", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhbk/keycloak-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4", "versions": [{"status": "unaffected", "version": "26.4-14", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhbk/keycloak-rhel9-operator", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "vendor": "Red Hat", "product": "Red Hat build of Keycloak 26.4.11", "packageName": "rhbk/keycloak-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-03-16T15:53:57.767Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-04-02T12:30:00.000Z", "value": "Made public."}], "datePublic": "2026-04-02T12:30:00.000Z", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:6475", "name": "RHSA-2026:6475", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6476", "name": "RHSA-2026:6476", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6477", "name": "RHSA-2026:6477", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:6478", "name": "RHSA-2026:6478", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2026-4282", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061", "name": "RHBZ#2448061", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-653", "description": "Improper Isolation or Compartmentalization"}]}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-04-07T11:27:33.522Z"}, "x_redhatCweChain": "CWE-653: Improper Isolation or Compartmentalization"}}, "cveMetadata": {"cveId": "CVE-2026-4282", "state": "PUBLISHED", "dateUpdated": "2026-06-30T03:19:07.728Z", "dateReserved": "2026-03-16T15:53:24.993Z", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "datePublished": "2026-04-02T12:44:52.941Z", "assignerShortName": "redhat"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-operator-bundle", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2.15-1", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2-18", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9-operator", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2-18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.2.15", "vendor": "Red Hat"}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-operator-bundle", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4.11-1", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4-14", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9-operator", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4-14", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.4.11", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}, {"affectedData": [{"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-operator-bundle", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2.15-1", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2-18", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9-operator", "product": "Red Hat build of Keycloak 26.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.2-18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:build_keycloak:26.2::el9"], "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.2.15", "vendor": "Red Hat"}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-operator-bundle", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4.11-1", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4-14", "versionType": "rpm"}]}, {"collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "affected", "packageName": "rhbk/keycloak-rhel9-operator", "product": "Red Hat build of Keycloak 26.4", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "26.4-14", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:build_keycloak:26.4::el9"], "defaultStatus": "unaffected", "packageName": "rhbk/keycloak-rhel9", "product": "Red Hat build of Keycloak 26.4.11", "vendor": "Red Hat"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*", "matchCriteriaId": "1830E455-7E11-4264-862D-05971A42D4A6", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:*", "matchCriteriaId": "C339EBE3-6BFD-4082-B904-4E8DB87AAE68", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:*", "matchCriteriaId": "3BDF8A92-727E-401B-80BB-A141DCB39750", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:*", "matchCriteriaId": "100AA077-7467-4F62-A8FD-88BC336972DF", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:*", "matchCriteriaId": "17E79930-BE1C-4901-AF63-36B3EB149AFC", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en Keycloak. El SingleUseObjectProvider, un almac\u00e9n global de clave-valor, carece de aislamiento adecuado de tipo y espacio de nombres. Esta vulnerabilidad permite a un atacante no autenticado falsificar c\u00f3digos de autorizaci\u00f3n. La explotaci\u00f3n exitosa puede llevar a la creaci\u00f3n de tokens de acceso con capacidad de administrador, resultando en escalada de privilegios."}], "id": "CVE-2026-4282", "lastModified": "2026-10-26T21:10:00.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4282", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-02T14:23:22.750489Z", "version": "2.0.3"}}]}, "published": "2026-04-02T13:16:26.680", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6475"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6476"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6477"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6478"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-4282"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6475"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6476"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6477"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:6478"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-4282"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-653"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-653"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2026:6476", "cpe": "cpe:/a:redhat:build_keycloak:26.2::el9", "package": "rhbk/keycloak-operator-bundle:26.2.15-1", "product_name": "Red Hat build of Keycloak 26.2", "release_date": "2026-04-02T00:00:00Z"}, {"advisory": "RHSA-2026:6476", "cpe": "cpe:/a:redhat:build_keycloak:26.2::el9", "package": "rhbk/keycloak-rhel9:26.2-18", "product_name": "Red Hat build of Keycloak 26.2", "release_date": "2026-04-02T00:00:00Z"}, {"advisory": "RHSA-2026:6476", "cpe": "cpe:/a:redhat:build_keycloak:26.2::el9", "package": "rhbk/keycloak-rhel9-operator:26.2-18", "product_name": "Red Hat build of Keycloak 26.2", "release_date": "2026-04-02T00:00:00Z"}, {"advisory": "RHSA-2026:6475", "cpe": "cpe:/a:redhat:build_keycloak:26.2::el9", "package": "rhbk/keycloak-rhel9", "product_name": "Red Hat build of Keycloak 26.2.15", "release_date": "2026-04-02T00:00:00Z"}, {"advisory": "RHSA-2026:6478", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "rhbk/keycloak-operator-bundle:26.4.11-1", "product_name": "Red Hat build of Keycloak 26.4", "release_date": "2026-04-02T00:00:00Z"}, {"advisory": "RHSA-2026:6478", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "rhbk/keycloak-rhel9:26.4-14", "product_name": "Red Hat build of Keycloak 26.4", "release_date": "2026-04-02T00:00:00Z"}, {"advisory": "RHSA-2026:6478", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "rhbk/keycloak-rhel9-operator:26.4-14", "product_name": "Red Hat build of Keycloak 26.4", "release_date": "2026-04-02T00:00:00Z"}, {"advisory": "RHSA-2026:6477", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "rhbk/keycloak-rhel9", "product_name": "Red Hat build of Keycloak 26.4.11", "release_date": "2026-04-02T00:00:00Z"}], "bugzilla": {"description": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw", "id": "2448061", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-653", "details": ["A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-4282", "public_date": "2026-04-02T12:30:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4282\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4282"], "statement": "This is an IMPORTANT vulnerability in Keycloak. An unauthenticated attacker can exploit a lack of type and namespace isolation in Keycloak's SingleUseObjectProvider to forge authorization codes and obtain admin-capable access tokens. This could lead to unauthorized administrative access within affected Keycloak deployments.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Red Hat build of Keycloak 26.4", "source": "cna", "vendor": "Red Hat"}, "product": "build_of_keycloak", "vendor": "redhat"}], "analysis": {"en": {"generated_at": "2026-04-02T23:18:56.904571+00:00", "value": {"mitigation_remediation": ["Apply the latest Red\u00a0Hat Keycloak update that resolves CVE\u20112026\u20114282.", "No official workaround available; rely on patching.", "Limit Keycloak exposure to trusted IP ranges or behind a firewall.", "Monitor system logs for abnormal token issuance or admin activity."], "summary": {"action": "Patch Immediately", "impact": "Privilege Escalation"}, "threat_synthesis": {"affected_systems": "The affected releases are Red\u00a0Hat builds of Keycloak 26.2, including sub\u2011version 26.2.15, and 26.4, including 26.4.11. These versions run on Red\u00a0Hat Enterprise Linux\u00a09 and should be considered for remediation.", "description_and_impact": "A flaw in Keycloak\u2019s SingleUseObjectProvider, a global key\u2011value store, fails to enforce proper type and namespace isolation. This weakness permits an unauthenticated attacker to forge authorization codes. When these forged codes are exchanged, Keycloak issues access tokens that carry administrative privileges, effectively allowing the attacker to gain full control over the system. The issue aligns with CWE\u2011653, reflecting improper isolation of objects within the process.", "risk_and_exploitability": "The vulnerability carries a CVSS score of 7.4, indicating high severity. No authentication is required and exploitation can be performed over the network by sending crafted requests. The EPSS score is not available and the vulnerability is not yet listed in the CISA KEV catalog; however, the potential impact remains significant, as successful exploitation results in total privilege escalation, compromising confidentiality, integrity, and availability of the protected resources."}}}}, "created": "2026-04-02T20:12:43.473019+00:00", "updated": "2026-04-03T09:18:49.604996+00:00", "vendors": ["redhat", "redhat$PRODUCT$build_of_keycloak"]}