cvedb.io
CVE-2025-66567
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2025-12-09T16:18:21.260 · Last modified 2026-06-17T09:57:02.663

Summary

The ruby-saml library is for implementing the client side of a SAML authorization. ruby-saml versions up to and including 1.12.4 contain an authentication bypass vulnerability due to an incomplete fix for CVE-2025-25292. ReXML and Nokogiri parse XML differently, generating entirely different document structures from the same input. This allows an attacker to execute a Signature Wrapping attack. This issue is fixed in version 1.18.0.

Affected products

onelogin — ruby-saml

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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.