CVE-2025-25291
CVSS v3
9.8
CRITICAL
EPSS Score
13.8 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2025-03-12
Frequently asked questions
What is 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.
Is CVE-2025-25291 actively exploited?
Active exploitation of CVE-2025-25291 has not been confirmed. The EPSS score is 13.8%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-25291?
CVE-2025-25291 has a CVSS v3 base score of 9.8 (CRITICAL severity).
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