CVE-2025-66567 in SAML-Toolkits ruby-samlinfo

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.

Responsible

GitHub_M

Reservation

12/04/2025

Disclosure

12/09/2025

Entries

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerability	CWE	Exp	Cou	CVE
334931	SAML-Toolkits ruby-saml Incomplete Fix CVE-2025-25292 signature verification	347	Not defined	Official fix	CVE-2025-66567

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