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simplesamlphp vulnerabilities

Vulnerabilities published for simplesamlphp in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 3

  1. CVE-2025-27773

    High · CVSS 8.6EPSS 0.41%No fix published

    SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding

    The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding. An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message. Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue.

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