Main Vulnerability Database Vulnerabilities #VU121036

Dependency on vulnerable third-party component in Single Sign-on with SAML - CVE-2025-66475

Published: January 7, 2026

Vulnerability identifier: #VU121036

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-66475

CWE-ID: CWE-1395

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to signature validation bypass in "robrichards/xmlseclibs". A remote attacker can gain access to the target system.

Single Sign-on with SAML
XMLSecLibs

Install updates from vendor's website.

Single Sign-on with SAML - addressed in versions 3.0.8, 4.0.5
XMLSecLibs - update to 3.1.4