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EPSS 0.2%top 85%

GHSA-794g-x443-36f7: Keycloak: Unauthorized access via improper validation of encrypted SAML assertions

0
High
Published: 07/02/2026 (07/02/2026, 20:42:23 UTC)
Source: GCVE Database
Vendor/Project: Red Hat Product Security
Product: org.keycloak:keycloak-services

Description

Keycloak's 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, injecting an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.

CVSS v3.1

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

Affected software

Affected versions
<=26.2.5>=26.3.0 <=26.4.7>=26.5.0

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/27/2026, 22:21:41 UTC

Technical Analysis

This advisory covers security fixes in Red Hat build of Keycloak 26.2.14 images used on OpenShift Container Platform. The vulnerabilities addressed include CVE-2026-3047, an authentication bypass caused by a disabled SAML client completing IdP-initiated login; CVE-2026-2603, unauthorized authentication via a disabled SAML Identity Provider; and CVE-2026-2092, unauthorized access resulting from improper validation of encrypted SAML assertions. These issues affect the SAML broker and identity provider components of Keycloak, potentially allowing unauthorized authentication and access. The advisory provides updated container images to remediate these issues.

Potential Impact

Successful exploitation of these vulnerabilities could allow attackers to bypass authentication controls or gain unauthorized access to systems relying on Keycloak for SAML-based single sign-on. This undermines the security of user authentication and could lead to unauthorized access to protected applications and services managed by Keycloak within OpenShift environments.

Mitigation Recommendations

Red Hat has released updated Keycloak 26.2.14 container images that address these vulnerabilities. Users should back up their existing installations and apply the updated images as provided by Red Hat to remediate the issues. Since this is a containerized product, deploying the updated images replaces vulnerable components. No additional mitigations are specified in the advisory.

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Technical Details

Gcve Source
db.gcve.eu
Csaf Category
csaf_security_advisory
Csaf Version
2.0
Publisher
Red Hat Product Security
Advisory Id
RHSA-2026:3925
Cve Count
3
Additional Cves
["CVE-2026-2603","CVE-2026-3047"]
Cvss Version
null

Threat ID: 6a4049db27e9c7971982fa99

Added to database: 06/27/2026, 22:08:27 UTC

Last enriched: 06/27/2026, 22:21:41 UTC

Last updated: 07/03/2026, 02:51:10 UTC

Views: 5

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