{"id":"BIT-gitlab-2025-25292","summary":"Ruby SAML vulnerable to SAML authentication bypass due to namespace handling (parser differential)","details":"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.","aliases":["CVE-2025-25292","GHSA-754f-8gm6-c4r2"],"modified":"2025-11-06T13:25:46.476Z","published":"2025-04-14T11:55:19.936Z","database_specific":{"severity":"Critical","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*","cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*"]},"references":[{"type":"WEB","url":"https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released"},{"type":"WEB","url":"https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials"},{"type":"WEB","url":"https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9"},{"type":"WEB","url":"https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97"},{"type":"WEB","url":"https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4"},{"type":"WEB","url":"https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0"},{"type":"WEB","url":"https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-754f-8gm6-c4r2"},{"type":"WEB","url":"https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv"},{"type":"WEB","url":"https://news.ycombinator.com/item?id=43374519"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-25292"},{"type":"WEB","url":"https://portswigger.net/research/saml-roulette-the-hacker-always-wins"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20250314-0009/"},{"type":"WEB","url":"https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-saml"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html"}],"affected":[{"package":{"name":"gitlab","ecosystem":"Bitnami","purl":"pkg:bitnami/gitlab"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"17.9.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/gitlab/BIT-gitlab-2025-25292.json"},"severity":[{"type":"CVSS_V4","score":"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"}]}],"schema_version":"1.7.3"}