CVE-2026-74909

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{"acknowledgement": "Red Hat would like to thank Stefan Guilhen (IBM) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2026:68276", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "rhbk/keycloak-operator-bundle:26.4.16-2", "product_name": "Red Hat build of Keycloak 26.4", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68276", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "rhbk/keycloak-rhel9:26.4-26", "product_name": "Red Hat build of Keycloak 26.4", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68276", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "rhbk/keycloak-rhel9-operator:26.4-26", "product_name": "Red Hat build of Keycloak 26.4", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68280", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "keycloak/rhbk-openshift-rhel9", "product_name": "Red Hat build of Keycloak 26.4.16", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68280", "cpe": "cpe:/a:redhat:build_keycloak:26.4::el9", "package": "keycloak-services", "product_name": "Red Hat build of Keycloak 26.4.16", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68277", "cpe": "cpe:/a:redhat:build_keycloak:26.6::el9", "package": "rhbk/keycloak-operator-bundle:26.6.7-3", "product_name": "Red Hat build of Keycloak 26.6", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68277", "cpe": "cpe:/a:redhat:build_keycloak:26.6::el9", "package": "rhbk/keycloak-rhel9:26.6-20", "product_name": "Red Hat build of Keycloak 26.6", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68277", "cpe": "cpe:/a:redhat:build_keycloak:26.6::el9", "package": "rhbk/keycloak-rhel9-operator:26.6-20", "product_name": "Red Hat build of Keycloak 26.6", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68278", "cpe": "cpe:/a:redhat:build_keycloak:26.6::el9", "package": "keycloak/rhbk-openshift-rhel9", "product_name": "Red Hat build of Keycloak 26.6.7", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68278", "cpe": "cpe:/a:redhat:build_keycloak:26.6::el9", "package": "keycloak-services", "product_name": "Red Hat build of Keycloak 26.6.7", "release_date": "2026-09-16T00:00:00Z"}], "bugzilla": {"description": "keycloak-services: keycloak-services: Incomplete fix for CVE-2026-15573 allows policy enforcer bypass via percent-encoded URI segments", "id": "2517354", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517354"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-862", "details": ["Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directory traversal segments. An authenticated user can use these encoded characters to trick the enforcer into applying a less restrictive security policy than intended, potentially gaining unauthorized access to sensitive administrative or private application endpoints."], "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-2026-74909", "package_state": [{"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Not affected", "package_name": "keycloak-services", "product_name": "Red Hat Single Sign-On 7"}], "public_date": "2026-09-16T13:08:37Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74909\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74909"], "statement": "The Red Hat Product Security team has assessed the severity of this vulnerability as Important, given that it allows for a direct bypass of authorization controls. Successful exploitation allows an attacker to reach restricted endpoints they are not authorized to access. The vulnerability's root cause is an incomplete fix for a previous URI normalization flaw, where encoded characters are not properly handled before the security matching logic is applied.", "threat_severity": "Important"}

{"created": "2026-09-18T02:15:17.071024+00:00", "updated": "2026-09-18T02:15:17.071028+00:00", "vendors": []}