CVE-2026-75807

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 mosamlloginvalidate ACS handler persisting the X.509 certificate extracted from an incoming SAMLResponse into the mosamlrequiredcertificate...

EUVD-2026-68133

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 mosamlloginvalidate ACS handler persisting the X.509 certificate extracted from an incoming SAMLResponse into the mosamlrequiredcertificate...

CVE-2026-75807

The SAML Single Sign On – SSO Login plugin for WordPress (versions up to 5.4.6 ) is vulnerable to an unauthenticated authentication bypass caused by X.509 certificate poisoning. The mo_saml_login_validate() ACS handler persists the X.509 certificate from an incoming SAMLResponse into the mo_saml_...

PT-2026-83496

Name of the Vulnerable Software and Affected Versions SAML Single Sign On – SSO Login plugin for WordPress versions prior to 5.4.7 Description An authentication bypass exists due to the mo saml login validate ACS handler persisting the X.509 certificate extracted from an incoming SAMLResponse int...

VulnCheck KEV: CVE-2026-15981

The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.4.4. This is due to the mosamlvalidatesignature function performing a loose boolean check on the raw tri-state integer returned by PHP's opensslverify, causing a...