Vulnerability in GitLab
CVE-2025-6601
GitLab has remediated an issue in GitLab EE affecting all versions from 18.4 before 18.4.3, and 18.5 before 18.5.1 that under certain conditions could have allowed authenticated users to gain unauthorized project access by exploiting the access request approval workflow.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- GitLab — versions 18.4, 18.5, 18.5.0
Weakness classification (CWE)
References
- about.gitlab.com/releases/2025/10/22/patch-release-gitlab-18-5-1-released/ (Release Notes, Vendor Advisory)
- gitlab.com/gitlab-org/gitlab/-/issues/551267 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/3209641 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2025-6601?
- CVE-2025-6601 is a low-severity vulnerability in GitLab, classified under CWE-840. CVSS score: 2.7/10. Published 2025-10-27.
- How severe is CVE-2025-6601?
- Low severity. CVSS v3 base score is 2.7 out of 10.