CVE-2025-25291
high-risk
Published 2025-03-12
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.
Do I need to act?
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13.8% chance of exploitation in next 30 days
EPSS score — higher than 86% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (3)
References (13)
Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-saml
Issue Tracking
https://news.ycombinator.com/item?id=43374519
Third Party Advisory
https://security.netapp.com/advisory/ntap-20250314-0010/
53
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
12/34 · Low
Exposure
9/34 · Low