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CVE-2025-25292

Ruby SAML vulnerable to SAML authentication bypass due to namespace handling (parser differential)

Published: Mar 12, 2025Updated: Nov 3, 2025 Sources: CVE List NVD GHSA BDUCWE-347
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
63.8%
Top 0.9%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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 contain a patch for the issue.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-347CWE-436

Affected Products

ruby-samlSAML-Toolkits
Library
OSS Libraries / generic-library
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
Ruby SAMLRuby Team
Library
OSS Libraries / generic-library
Omniauth SAMLRuby Team
Library
OSS Libraries / generic-library
GitlabGitLab Inc.DevTools & CI
saml-toolkitsoss-projectOSS Librariesaka ruby-saml, saml-toolkits ruby-saml
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ruby teamoss-projectOSS Librariesaka ruby team, ruby-lang
gitlab inc.commercialUSDevTools & CI
and 4 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-754f-8gm6-c4r2
github.com
https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv
github.com
https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9
github.com
and 17 more references View all →

Timeline

Published
Mar 12, 2025
Last Updated
Nov 3, 2025

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