CyberRota Analysis
AI-GeneratedThe SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to an authentication bypass, allowing unauthenticated attackers to overwrite the stored IdP signing certificate and forge SAML assertions for any account, including those with administrative privileges. This vulnerability affects versions up to 5.4.6 and poses a significant risk of unauthorized access to sensitive accounts. WordPress administrators using this plugin should prioritize immediate updates or mitigations to safeguard against potential exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 5.4.6. This is due to the mo_saml_login_validate() ACS handler persisting the X.509 certificate extracted from an incoming SAMLResponse into the mo_saml_required_certificate option before the signature-validation verdict is enforced, because mo_saml_find_certificate() returns false on a fingerprint mismatch rather than halting execution. This makes it possible for unauthenticated attackers to overwrite the plugin's stored IdP signing certificate with an attacker-controlled value, and subsequently forge SAML assertions for any WordPress account — including administrators — to obtain a fully privileged session. Note: The exploit requires the administrator to perform a repair after receiving the test_config_error_wpsamlerr004 error message during the test configuration.