CVE-2025-25291
1 advisory.
RubyGems/ruby-saml CVE-2025-25291: critical 9.8
Ruby SAML allows a SAML authentication bypass due to DOCTYPE handling (parser differential)
Action: Upgrade ruby-saml to 1.12.4 or later.
bundle update ruby-samlAffected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.12.4 | - |
| 1.13.0 | 1.18.0 | - |
Fixed versions
| 1.12.4 | 1.18.0 |
Sources
- osv: GHSA-4vc4-m8qh-g8jm
- https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-4vc4-m8qh-g8jm
- https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv
- https://nvd.nist.gov/vuln/detail/CVE-2025-25291
- https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9
- https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97
- https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released
- https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials
- https://github.com/SAML-Toolkits/ruby-saml
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/CVE-2025-25291.yml
- https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html
- https://news.ycombinator.com/item?id=43374519
- https://portswigger.net/research/saml-roulette-the-hacker-always-wins
- https://security.netapp.com/advisory/ntap-20250314-0010
- https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-saml
CVE-2025-25291 · published · modified · JSON