Vulnerability in GitLab
CVE-2026-0958
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to cause denial of service through memory or CPU exhaustion by bypassing JSON validation middleware limits.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (31.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- GitLab — versions 18.4, 18.7, 18.8
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/586202 (issue-tracking, permissions-required, Issue Tracking, Broken Link)
- hackerone.com/reports/3463363 (Permissions Required, technical-description, permissions-required, exploit)
- about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-0958?
- CVE-2026-0958 is a high-severity vulnerability in GitLab, classified under CWE-436. CVSS score: 7.5/10. Published 2026-02-11.
- How severe is CVE-2026-0958?
- High severity. CVSS v3 base score is 7.5 out of 10.