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CVE-2025-66567

🚨 CRITICAL

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...

Published
Dec 09, 2025
Last Modified
Dec 10, 2025
Views
11
Bookmarks
0

Description

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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 (1)

onelogin - ruby-saml

Version: *

CVSS Scores

CVSS 3.1 9.1
9.1
CRITICAL
CVSS 2.0 9.1

References

github.com github.com github.com

Additional Information

Source
security-advisories@github.com
State
Analyzed

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