Auth bypass in GitLab
CVE-2026-1080
GitLab has remediated an issue in GitLab EE affecting all versions from 16.7 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that, under certain conditions could have allowed an authenticated user to access iteration data from private descendant groups by querying the iterations API endpoint.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.4% 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 16.7, 18.7, 18.8
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/586477 (issue-tracking, permissions-required, Issue Tracking, Broken Link)
- hackerone.com/reports/3484568 (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-2026-1080?
- CVE-2026-1080 is a medium-severity vulnerability in GitLab, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-02-11.
- How severe is CVE-2026-1080?
- Medium severity. CVSS v3 base score is 4.3 out of 10.