CVE-2025-6171

MEDIUM

Gitlab < 18.3.6 - Missing Authorization

Title source: rule

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.

References (3)

[Release Notes, Vendor Advisory] https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/

[Broken Link] https://gitlab.com/gitlab-org/gitlab/-/issues/549730

[Permissions Required] https://hackerone.com/reports/3183740

Scores

CVSS v3 5.3

EPSS 0.0002

EPSS Percentile 5.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Classification

CWE

CWE-862

Status published

Affected Products (2)

gitlab/gitlab < 18.3.6

gitlab/gitlab < 18.3.6

Timeline

Published Nov 15, 2025

Tracked Since Feb 18, 2026