Vulnerability · Published Feb 11, 2026 · Assigned by GitLab
CVE-2026-1080Authorization Bypass Through User-Controlled Key in GitLab
Medium 4.3
In plain English
A medium-severity authorization bypass via user-controlled key in GitLab from GitLab. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.3%top 79.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:24.04:LTS | gitlab-agent | no fix listed | UBUNTU-CVE-2026-1080 |
| Ubuntu:25.10 | gitlab-agent | no fix listed | UBUNTU-CVE-2026-1080 |
| Ubuntu:26.04:LTS | gitlab-agent | no fix listed | UBUNTU-CVE-2026-1080 |
| Ubuntu:26.10 | gitlab-agent | no fix listed | UBUNTU-CVE-2026-1080 |
Affected products (as reported)
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- GitLab Issue #586477 issue-tracking, permissions-required
- HackerOne Bug Bounty Report #3484568 technical-description, exploit, permissions-required
- https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/