Improper Validation of Specified Type of Input in Red Hat Red Hat build of Keycloak 26.2 (CVE-2026-2092)
CVE-2026-2092 is a high-severity vulnerability in Red Hat build of Keycloak 26.2 where the SAML broker endpoint improperly validates encrypted assertions if the overall SAML response is not signed. An attacker with a valid signed SAML assertion can craft a malicious SAML response to inject an encrypted assertion for an arbitrary principal, potentially leading to unauthorized access and information disclosure. Red Hat has released updated Keycloak 26.2.14 images addressing this issue. Users are advised to back up their installations and apply the update to mitigate the vulnerability.
AI Analysis
Technical Summary
This vulnerability affects the Red Hat build of Keycloak 26.2's Security Assertion Markup Language (SAML) broker endpoint. The flaw lies in improper validation of encrypted assertions when the overall SAML response lacks a signature. An attacker possessing a valid signed SAML assertion can exploit this by crafting a malicious SAML response that includes an encrypted assertion for an arbitrary principal. This can result in unauthorized access and potential information disclosure. The issue is tracked as CVE-2026-2092 with a CVSS v3.1 score of 7.7 (high severity). Red Hat has issued security advisories RHSA-2026:3925 and RHSA-2026:3926, releasing updated Keycloak 26.2.14 images that fix this vulnerability.
Potential Impact
Successful exploitation allows an attacker to bypass authentication controls by injecting encrypted assertions for arbitrary principals, leading to unauthorized access to protected resources and potential disclosure of sensitive information. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:L/A:L).
Mitigation Recommendations
Red Hat has released updated Keycloak 26.2.14 images that address this vulnerability. Users should back up their existing installations, including applications, configuration files, and databases, before applying the update. Applying the official update from Red Hat is the recommended remediation. No other temporary or workaround fixes are indicated in the advisory.
Improper Validation of Specified Type of Input in Red Hat Red Hat build of Keycloak 26.2 (CVE-2026-2092)
Description
CVE-2026-2092 is a high-severity vulnerability in Red Hat build of Keycloak 26.2 where the SAML broker endpoint improperly validates encrypted assertions if the overall SAML response is not signed. An attacker with a valid signed SAML assertion can craft a malicious SAML response to inject an encrypted assertion for an arbitrary principal, potentially leading to unauthorized access and information disclosure. Red Hat has released updated Keycloak 26.2.14 images addressing this issue. Users are advised to back up their installations and apply the update to mitigate the vulnerability.
CVSS v3.1
Score 7.7high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Red Hat build of Keycloak 26.2's Security Assertion Markup Language (SAML) broker endpoint. The flaw lies in improper validation of encrypted assertions when the overall SAML response lacks a signature. An attacker possessing a valid signed SAML assertion can exploit this by crafting a malicious SAML response that includes an encrypted assertion for an arbitrary principal. This can result in unauthorized access and potential information disclosure. The issue is tracked as CVE-2026-2092 with a CVSS v3.1 score of 7.7 (high severity). Red Hat has issued security advisories RHSA-2026:3925 and RHSA-2026:3926, releasing updated Keycloak 26.2.14 images that fix this vulnerability.
Potential Impact
Successful exploitation allows an attacker to bypass authentication controls by injecting encrypted assertions for arbitrary principals, leading to unauthorized access to protected resources and potential disclosure of sensitive information. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:L/A:L).
Mitigation Recommendations
Red Hat has released updated Keycloak 26.2.14 images that address this vulnerability. Users should back up their existing installations, including applications, configuration files, and databases, before applying the update. Applying the official update from Red Hat is the recommended remediation. No other temporary or workaround fixes are indicated in the advisory.
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: 07/15/2026, 15:57:18 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 135
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