CVE-2025-25291 (GCVE-0-2025-25291)

Vulnerability from cvelistv5 – Published: 2025-03-12 20:16 – Updated: 2025-11-03 19:44
VLAI?
Title
ruby-saml vulnerable to SAML authentication bypass due to DOCTYPE handling (parser differential)
Summary
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.
Severity ?
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-436 - Interpretation Conflict
Assigner
References
Impacted products
Vendor Product Version
SAML-Toolkits ruby-saml Affected: < 1.12.4
Affected: >= 1.13.0, < 1.18.0
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      "cveMetadata": "{\"cveId\": \"CVE-2025-25291\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-09-12T19:07:07.030Z\", \"dateReserved\": \"2025-02-06T17:13:33.122Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2025-03-12T20:16:12.181Z\", \"assignerShortName\": \"GitHub_M\"}",
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}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.