XSS in GitLab
CVE-2025-2255
An issue has been discovered in Gitlab EE/CE for AppSec affecting all versions from 13.5.0 before 17.8.6, 17.9 before 17.9.3, and 17.10 before 17.10.1. Certain error messages could allow Cross-Site Scripting attacks (XSS). for AppSec.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.7% 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 17.10, 17.10.0, 13.5.0
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/524635 (issue-tracking, Exploit, permissions-required, Issue Tracking)
- hackerone.com/reports/2994150 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2025-2255?
- CVE-2025-2255 is a high-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2025-03-27.
- How severe is CVE-2025-2255?
- High severity. CVSS v3 base score is 8.7 out of 10.