Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-25291

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.1
EPSS Ranking 92.8%
CVSS Severity
CVSS v3 Score 9.8
References
Products affected by CVE-2025-25291


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