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This CVE is currently being enriched by team members, this process results in the association of reference link tags, CVSS, CWE, and CPE applicability statement data.
Description
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 fix the issue.
Metrics
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OR
*cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:ruby:*:* versions up to (excluding) 1.10.6
*cpe:2.3:a:onelogin:ruby-saml:*:*:*:*:*:*:*:* versions up to (excluding) 1.12.4
*cpe:2.3:a:onelogin:ruby-saml:*:*:*:*:*:*:*:* versions from (including) 1.13.0 up to (excluding) 1.18.0
*cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:ruby:*:* versions from (including) 2.0.0 up to (excluding) 2.1.3
*cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:ruby:*:* versions from (including) 2.2.0 up to (excluding) 2.2.3
GitHub, Inc.: https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials Types: Exploit, Third Party Advisory
New CVE Received from GitHub, Inc.3/12/2025 5:15:42 PM
Action
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New Value
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Description
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 fix the issue.
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