RCE in GitLab
CVE-2026-19478
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 that under certain conditions could allow an unauthenticated user to remotely modify or delete public projects and user data via a GraphQL directive.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.
EPSS exploit prediction
EPSS: 0.602 (99.1th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.060 · newest: 0.602 · change: +0.542
Affected products
- GitLab — versions 18.2, 19.0, 19.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-4-released/ (Vendor Advisory)
- gitlab.com/gitlab-org/gitlab/-/work_items/611377 (Not Applicable)
- hackerone.com/reports/3926431 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2026-19478?
- CVE-2026-19478 is a critical-severity vulnerability in GitLab, classified under Code Injection. CVSS score: 9.4/10. Published 2026-08-17.
- How severe is CVE-2026-19478?
- Critical severity. CVSS v3 base score is 9.4 out of 10.
- Is CVE-2026-19478 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.