Vulnerability in Gitlab
CVE-2026-3988
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab i…
EPSS: 0.002 (46.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Gitlab — versions 18.5, 18.9, 18.10
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/work_items/593140
- HackerOne Bug Bounty Report #3597342 (technical-description, exploit, permissions-required)
- about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/
Frequently asked questions
- What is CVE-2026-3988?
- CVE-2026-3988 is a high-severity vulnerability in Gitlab, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-03-25.
- How severe is CVE-2026-3988?
- High severity. CVSS v3 base score is 7.5 out of 10.