cvedb.io
CVE-2025-27773
HIGH · CVSS 8.6
EPSS exploitation probability: 0%
Published 2025-03-11T19:15:43.677 · Last modified 2026-06-17T09:04:11.953

Summary

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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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.