Description

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.

INFO

Published Date :

2025-03-11T19:04:52.135Z

Last Modified :

2025-05-09T20:03:38.107Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-27773 vulnerability.

Vendors Products
Simplesamlphp
  • Saml2
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-27773.

URL Resource
https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L104-L113 cve-icon cve-icon
https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L178-L217 cve-icon cve-icon
https://github.com/simplesamlphp/saml2/commit/7867d6099dc7f31bed1ea10e5bea159c5623d2a0 cve-icon cve-icon
https://github.com/simplesamlphp/saml2/security/advisories/GHSA-46r4-f8gj-xg56 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/05/msg00013.html cve-icon
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CVSS Vulnerability Scoring System

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