CVE-2026-3047

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Esto permite a un atacante remoto obtener acceso no autorizado a otros clientes habilitados sin re-autenticaci\u00f3n, eludiendo eficazmente las restricciones de seguridad."}], "id": "CVE-2026-3047", "lastModified": "2026-07-15T02:20:56.260", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-3047", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-06T18:13:06.967396Z", "version": "2.0.3"}}]}, "published": "2026-03-05T19:16:18.383", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3925"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3926"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3947"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3948"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-3047"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2441966"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3925"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3926"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3947"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/errata/RHSA-2026:3948"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-3047"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2441966"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3047.json"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-305"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-305"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[26.2.14-1,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Red Hat build of Keycloak 26.2", "source": "cna", "vendor": "Red Hat"}, "product": "red_hat_build_of_keycloak_26.2", "vendor": "red_hat"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[26.2-16,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Red Hat build of Keycloak 26.2", "source": "cna", "vendor": "Red Hat"}, "product": "red_hat_build_of_keycloak_26.2", "vendor": "red_hat"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Red Hat build of Keycloak 26.2.14", "source": "cna", "vendor": "Red Hat"}, "product": "red_hat_build_of_keycloak_26.2.14", "vendor": "red_hat"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[26.4.10-1,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Red Hat build of Keycloak 26.4", "source": "cna", "vendor": "Red Hat"}, "product": "red_hat_build_of_keycloak_26.4", "vendor": "red_hat"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[26.4-12,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Red Hat build of Keycloak 26.4", "source": "cna", "vendor": "Red Hat"}, "product": "red_hat_build_of_keycloak_26.4", "vendor": "red_hat"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Red Hat build of Keycloak 26.4.10", "source": "cna", "vendor": "Red Hat"}, "product": "red_hat_build_of_keycloak_26.4.10", "vendor": "red_hat"}], "analysis": {"en": {"generated_at": "2026-04-16T12:15:36.258927+00:00", "value": {"mitigation_remediation": ["Upgrade Red\u202fHat Keycloak to a release that includes the fix (for example, adopt the latest patch from RHSA-2026:3925, RHSA-2026:3948, or later).", "Audit each realm to ensure that any SAML client marked as disabled is not configured as an IdP\u2011initiated broker landing target; remove such associations.", "Re\u2011configure or delete any disabled SAML clients that are incorrectly referenced as broker landing targets and verify that the broker configuration no longer allows the disabled client to complete the login flow."], "summary": {"action": "Patch ASAP", "impact": "Authentication bypass allowing unauthorized SSO session and access to enabled clients"}, "threat_synthesis": {"affected_systems": "Red\u202fHat builds of Keycloak are affected, including versions 26.2, 26.2.14, 26.4, and 26.4.10. Users deploying these releases should verify whether they have disabled SAML clients that are still referenced as broker landing targets in their realm configuration.", "description_and_impact": "A flaw in the SAML broker component of Keycloak allows a disabled SAML client that is configured as an IdP\u2011initiated broker landing target to complete the authentication flow, resulting in the creation of a valid Single Sign\u2011On session. The flaw permits a remote attacker to bypass the usual authentication checks, thereby gaining unauthorized access to any enabled clients associated with the same realm without re\u2011authentication. This represents an authentication bypass (CWE\u2011305) that can compromise confidentiality and integrity of protected resources.", "risk_and_exploitability": "The vulnerability carries a CVSS 8.8 score, indicating high severity, but the EPSS score is below 1\u202f%, suggesting a low probability of exploitation. It is not listed in the CISA KEV catalog. Attackers can exploit the flaw remotely by leveraging the IdP\u2011initiated SAML flow; the condition requires a disabled client to be incorrectly mapped as a broker landing target, a configuration mistake that provides an opportunity to gain unauthorized SSO access."}}}}, "created": "2026-03-06T15:01:26.808629+00:00", "updated": "2026-04-16T12:30:06.103478+00:00", "vendors": ["red_hat", "red_hat$PRODUCT$red_hat_build_of_keycloak_26.2", "red_hat$PRODUCT$red_hat_build_of_keycloak_26.2.14", "red_hat$PRODUCT$red_hat_build_of_keycloak_26.4", "red_hat$PRODUCT$red_hat_build_of_keycloak_26.4.10"]}