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CVE-2025-27773 (GCVE-0-2025-27773)

Vulnerability from cvelistv5 – Published: 2025-03-11 19:04 – Updated: 2025-05-09 20:03
VLAI
Title
SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding
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.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-11 19:26 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version CPE status
simplesamlphp saml2 Affected: < 4.17.0
Affected: >= 5.0.0-alpha.1, < 5.0.0-alpha.20
guessed Create a notification for this product.
Show details on NVD website
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