Description

The ruby-saml library implements the client side of an SAML authorization. Versions up to and including 1.12.4, are vulnerable to authentication bypass through the libxml2 canonicalization process used by Nokogiri for document transformation, which allows an attacker to execute a Signature Wrapping attack. When libxml2’s canonicalization is invoked on an invalid XML input, it may return an empty string rather than a canonicalized node. ruby-saml then proceeds to compute the DigestValue over this empty string, treating it as if canonicalization succeeded. This issue is fixed in version 1.18.0.

INFO

Published Date :

2025-12-09T02:03:20.397Z

Last Modified :

2025-12-09T16:02:52.564Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-66568 vulnerability.

Vendors Products
Onelogin
  • Ruby-saml
Saml-toolkits
  • Ruby-saml
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-66568.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact