**Summary** There is a critical vulnerability on xmlseclibs [CVE-2025-66475](https://github.com/robrichards/xmlseclibs/security/advisories/GHSA-c4cc-x928-vjw9), a dependency of php-saml Update to the following versions of php-saml which forces the use of patched versions of xmlseclibs: - [2.21.1](https://github.com/SAML-Toolkits/php-saml/releases/tag/2.21.1) - [3.8.1](https://github.com/SAML-Toolkits/php-saml/releases/tag/3.8.1) - [4.3.1](https://github.com/SAML-Toolkits/php-saml/releases/tag/4.3.1) **Impact** Signature Wrapping Vulnerabilities allows an attacker to impersonate a user.
GHSA-5j8p-438x-rgg5: SAML PHP Toolkit Vulnerability on xmlseclibs CVE-2025-66475
Critical SAML PHP Toolkit vulnerability (CVE-2025-66475) in xmlseclibs allows signature wrapping, enabling user impersonation; patches available.