A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-wmxr-6j5f-838p Keycloak: Unauthorized access via improper validation of encrypted SAML assertions
Fixes

Solution

No solution given by the vendor.


Workaround

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.

History

Wed, 18 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 18 Mar 2026 01:30:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE. A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.
Title keycloak-services: Keycloak: Unauthorized access via improper validation of encrypted SAML assertions Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions
References

Fri, 06 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE.
Title keycloak-services: Keycloak: Unauthorized access via improper validation of encrypted SAML assertions
First Time appeared Redhat
Redhat build Keycloak
Weaknesses CWE-1287
CPEs cpe:/a:redhat:build_keycloak:26.2::el9
cpe:/a:redhat:build_keycloak:26.4::el9
Vendors & Products Redhat
Redhat build Keycloak
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L'}

threat_severity

Important


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-03-18T14:11:08.708Z

Reserved: 2026-02-06T10:28:15.411Z

Link: CVE-2026-2092

cve-icon Vulnrichment

Updated: 2026-03-18T14:11:03.636Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-18T02:16:24.577

Modified: 2026-03-18T14:52:44.227

Link: CVE-2026-2092

cve-icon Redhat

Severity : Important

Publid Date: 2026-03-05T12:34:00Z

Links: CVE-2026-2092 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-06T15:18:27Z

Weaknesses