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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.03825.

Exploitation none

Automatable yes

Technical Impact total

Affected Vendors & Products

Vendors Products
Netapp Subscribe
Storagegrid Subscribe
Omniauth Subscribe
Omniauth Saml Subscribe
Onelogin Subscribe
Ruby-saml Subscribe

Configuration 1 [-]

OR cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:ruby:*:*
cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:ruby:*:*
cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:ruby:*:*
cpe:2.3:a:onelogin:ruby-saml:*:*:*:*:*:*:*:*
cpe:2.3:a:onelogin:ruby-saml:*:*:*:*:*:*:*:*

Configuration 2 [-]

cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:*

No data.

No data.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4115-1 ruby-saml security update
EUVD EUVD EUVD-2025-6414 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.
Github GHSA Github GHSA GHSA-754f-8gm6-c4r2 Ruby SAML allows a SAML authentication bypass due to namespace handling (parser differential)
Ubuntu USN Ubuntu USN USN-7409-1 RubySAML vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released cve-icon cve-icon
https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials cve-icon cve-icon
https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9 cve-icon cve-icon
https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97 cve-icon cve-icon
https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4 cve-icon cve-icon
https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0 cve-icon cve-icon
https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-754f-8gm6-c4r2 cve-icon cve-icon
https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html cve-icon
https://news.ycombinator.com/item?id=43374519 cve-icon
https://portswigger.net/research/saml-roulette-the-hacker-always-wins cve-icon cve-icon
https://security.netapp.com/advisory/ntap-20250314-0009/ cve-icon
https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-saml cve-icon cve-icon
History

Tue, 04 Nov 2025 05:30:00 +0900

Type Values Removed Values Added
References

Sat, 13 Sep 2025 04:15:00 +0900

Type Values Removed Values Added
References

Sat, 02 Aug 2025 03:30:00 +0900

Type Values Removed Values Added
First Time appeared Netapp
Netapp storagegrid
CPEs cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:*
Vendors & Products Netapp
Netapp storagegrid

Sat, 02 Aug 2025 00:00:00 +0900

Type Values Removed Values Added
First Time appeared Omniauth
Omniauth omniauth Saml
Onelogin
Onelogin ruby-saml
CPEs cpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:ruby:*:*
cpe:2.3:a:onelogin:ruby-saml:*:*:*:*:*:*:*:*
Vendors & Products Omniauth
Omniauth omniauth Saml
Onelogin
Onelogin ruby-saml
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Sat, 12 Jul 2025 22:45:00 +0900

Type Values Removed Values Added
Metrics epss

{'score': 0.00806}

 epss

{'score': 0.00705}

Thu, 20 Mar 2025 22:45:00 +0900

Type Values Removed Values Added
References
Metrics cvssV4_0

{'score': 8.8, 'vector': '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/E:P'}

 cvssV4_0

{'score': 9.3, 'vector': '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'}

Wed, 19 Mar 2025 00:15:00 +0900

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Sun, 16 Mar 2025 06:45:00 +0900

Type Values Removed Values Added
References

Fri, 14 Mar 2025 19:45:00 +0900

Type Values Removed Values Added
References

Thu, 13 Mar 2025 06:45:00 +0900

Type Values Removed Values Added
References
Metrics cvssV4_0

{'score': 8, 'vector': '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/E:U'}

 cvssV4_0

{'score': 8.8, 'vector': '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/E:P'}

Thu, 13 Mar 2025 06:00:00 +0900

Type Values Removed Values Added
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.
Title Ruby SAML vulnerable to SAML authentication bypass due to namespace handling (parser differential)
Weaknesses CWE-347
CWE-436
References
Metrics cvssV4_0

{'score': 8, 'vector': '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/E:U'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-11-03T19:45:01.139Z

Reserved: 2025-02-06T17:13:33.122Z

Link: CVE-2025-25292

cve-icon Vulnrichment

Updated: 2025-03-15T20:47:21.997Z

cve-icon NVD

Status : Modified

Published: 2025-03-12T21:15:42.177

Modified: 2025-11-03T20:17:58.943

Link: CVE-2025-25292

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses