Vulnerability in GitLab
CVE-2026-1230
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 1.0 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to cause repository downloads to contain different code than displayed in the web interface due to incorrect validation of branch references under certain circumstances.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (8.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- GitLab — versions 1.0, 18.8, 18.9
Weakness classification (CWE)
References
- hackerone.com/reports/3505165 (Permissions Required, technical-description, permissions-required, exploit)
- gitlab.com/gitlab-org/gitlab/-/work_items/587002 (Broken Link)
- about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-1230?
- CVE-2026-1230 is a medium-severity vulnerability in GitLab, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 4.1/10. Published 2026-03-11.
- How severe is CVE-2026-1230?
- Medium severity. CVSS v3 base score is 4.1 out of 10.