CVE-2025-25292

Name: CVE-2025-25292
Creator: NVD / NIST
Published: 2025-03-12T21:15:42.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 63.79%

Last modified Jun 17, 2026

CVE-2025-25292 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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. EPSS estimates a 63.79% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

9.3/10

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:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

63.79%

99.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Omniauth	Omniauth Saml	< 1.10.6
Omniauth	Omniauth Saml	>= 2.0.0, < 2.1.3
Omniauth	Omniauth Saml	>= 2.2.0, < 2.2.3
Onelogin	Ruby-Saml	< 1.12.4
Onelogin	Ruby-Saml	>= 1.13.0, < 1.18.0
Netapp	Storagegrid	All versions

References

https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-releasedPatch
https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentialsExploit, Third Party Advisory
https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9Patch
https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97Patch
https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4Release Notes
https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0Release Notes
https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-754f-8gm6-c4r2Vendor Advisory
https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xvVendor Advisory
https://portswigger.net/research/saml-roulette-the-hacker-always-winsExploit, Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-samlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html
https://news.ycombinator.com/item?id=43374519Issue Tracking
https://security.netapp.com/advisory/ntap-20250314-0009/Third Party Advisory

Timeline

Published: Mar 12, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-25292?

How severe is CVE-2025-25292?

CVE-2025-25292 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 63.79% probability of exploitation in the next 30 days.

How do I fix CVE-2025-25292?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-25292?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST