XSS in GitLab
CVE-2025-0555
A Cross Site Scripting (XSS) vulnerability in GitLab-EE affecting all versions from 16.6 prior to 17.7.6, 17.8 prior to 17.8.4, and 17.9 prior to 17.9.1 allows an attacker to bypass security controls and execute arbitrary scripts in a users browser under specific conditions.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- GitLab — versions 17.8, 17.9.0, 17.9
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/514004 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/2939833 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2025-0555?
- CVE-2025-0555 is a high-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 7.7/10. Published 2025-03-03.
- How severe is CVE-2025-0555?
- High severity. CVSS v3 base score is 7.7 out of 10.