CVE-2026-2092

Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions

State: Published
Severity: 7.7 High
Published: Mar 18, 2026
Updated: Oct 6, 2026
Reserved: Feb 6, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L	redhat
3.1	7.7 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L	redhat-SADP

Weaknesses

CWE-1287 Improper Validation of Specified Type of Input

Affected Products

Product	Versions
Red Hat build of Keycloak 26.2Red Hat	26.2.14-1 and laterNot affected
Red Hat build of Keycloak 26.2Red Hat	26.2-16 and laterNot affected
Red Hat build of Keycloak 26.2Red Hat	26.2-16 and laterNot affected
Red Hat build of Keycloak 26.2.14Red Hat
Red Hat build of Keycloak 26.4Red Hat	26.4.10-1 and laterNot affected
Red Hat build of Keycloak 26.4Red Hat	26.4-12 and laterNot affected
Red Hat build of Keycloak 26.4Red Hat	26.4-12 and laterNot affected
Red Hat build of Keycloak 26.4.10Red Hat
Red Hat Single Sign-On 7.6.13Red Hat
Red Hat Single Sign-On 7.6 for RHEL 7Red Hat	0:18.0.20-1.redhat_00001.1.el7sso and laterNot affected
Red Hat Single Sign-On 7.6 for RHEL 8Red Hat	0:18.0.20-1.redhat_00001.1.el8sso and laterNot affected
Red Hat Single Sign-On 7.6 for RHEL 9Red Hat	0:18.0.20-1.redhat_00001.1.el9sso and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.6-85 and laterNot affected

References

RHSA-2026:3925vendor-advisory
RHSA-2026:3926vendor-advisory
RHSA-2026:3947vendor-advisory
RHSA-2026:3948vendor-advisory
RHSA-2026:76128vendor-advisory
RHSA-2026:76129vendor-advisory
RHSA-2026:76130vendor-advisory
RHSA-2026:76132vendor-advisory
RHSA-2026:76134vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-2092vdb-entry
RHBZ#2437296issue-tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2092.json

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.