Vulnerability · Published Nov 15, 2025 · Assigned by GitLab
CVE-2025-6171Missing Authorization in GitLab
Medium 5.3
In plain English
A medium-severity missing authorization in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 72.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.2 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker with reporter access to view branch names and pipeline details by accessing the packages API endpoint even when repository access was disabled.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/
- GitLab Issue #549730 issue-tracking, permissions-required
- HackerOne Bug Bounty Report #3183740 technical-description, exploit, permissions-required