Summary
generated automatically from NVD dataGitLab CE/EE has a flaw in which insufficient regular expression validation lets an unauthenticated user run arbitrary code on the GitLab server, under certain conditions, through a specially crafted regular expression in a CI/CD configuration. It affects versions from 19.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2, and is classified as CWE-190. The issue is rated CRITICAL with a CVSS v3.1 score of 10.0 and is listed in the CISA KEV catalog, which indicates active exploitation.
NVD description
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.
⚠️ Actively exploited — CISA KEV
This CVE was added to CISA's Known Exploited Vulnerabilities catalog on 2026-10-29. It is confirmed exploited in the wild and must be patched as a priority.
Remediation deadline (US federal agencies): 2026-11-01
EPSS · FIRST.org
18.4%probability of exploitation in the next 30 days
Higher than 97% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-29, recomputed daily by FIRST.org.
In-depth analysis on cveo.tech
This CVE is covered in an article: context, affected versions and published fixes.
CVSS v3.1 Score
Information
- Published
- 13 oct. 2026
- Updated
- 30 oct. 2026
- Status
- Undergoing Analysis
- Source
- cve@gitlab.com
Affected products
Bounds published by NVD: "< 8.4.27" means 8.4.27 is no longer vulnerable. The fixed release to install is in the vendor advisory.
Weaknesses (CWE)
References (5)
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/Release NotesVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/work_items/630686Issue Tracking
- https://hackerone.com/reports/4055749Permissions Required
- https://hackerone.com/reports/4058589Permissions Required
Similar CVEs
Other vulnerabilities of type CWE-190
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