What’s Vulnerable › Vulnerabilities

CVE-2025-6171: Missing Authorization in GitLab

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-15 · updated 2026-10-19
• Weakness: CWE-862

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

• GitLab: from 13.2.0 before 18.3.6; from 18.4.0 before 18.4.4; from 18.5.0 before 18.5.2 — fixed in 18.3.6, 18.4.4, 18.5.2

How to fix

Upgrade to a fixed version: GitLab 18.3.6, 18.4.4, 18.5.2. Check the vendor advisory for mitigations.

References

• https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/
• https://gitlab.com/gitlab-org/gitlab/-/issues/549730
• https://hackerone.com/reports/3183740

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