CVE-2026-97229: gitlab gitlab, ruby-lang ruby

CVSS 10.0 (critical) · listed as exploited by CISA since 2026-10-29 · published 2026-10-13

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server via a specially crafted regular expression in a CI/CD configuration, due to insufficient regular expression validation.

Affected products (NVD): gitlab gitlab, ruby-lang ruby

Fixed in (NVD): 19.2.8, 19.3.5, 19.4.2, 3.3.13, 3.4.12, 4.0.8

Weakness: CWE-190

Source: NVD CVE-2026-97229

References

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/
• https://gitlab.com/gitlab-org/gitlab/-/work_items/630686
• https://hackerone.com/reports/4055749
• https://hackerone.com/reports/4058589
• https://github.com/rapid7/metasploit-framework/pull/22017
• https://www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-97229

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