SSRF in GitLab
CVE-2025-6454
An issue has been discovered in GitLab CE/EE affecting all versions from 16.11 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed authenticated users to make unintended internal requests through proxy environments by injecting crafted sequences.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- GitLab — versions 16.11, 18.2, 18.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/ (Release Notes, Vendor Advisory)
- gitlab.com/gitlab-org/gitlab/-/issues/550766 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/3162711 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2025-6454?
- CVE-2025-6454 is a high-severity vulnerability in GitLab, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.5/10. Published 2025-09-12.
- How severe is CVE-2025-6454?
- High severity. CVSS v3 base score is 8.5 out of 10.
- Is CVE-2025-6454 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.