XSS in GitLab
CVE-2025-7734
An issue has been discovered in GitLab CE/EE affecting all versions from 14.2 before 18.0.6, 18.1 before 18.1.4 and 18.2 before 18.2.2 that, under certain conditions, could have allowed a successful attacker to execute actions on behalf of users by injecting malicious content.
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 (22.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd 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 14.2, 18.1, 18.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.com/gitlab-org/gitlab/-/issues/556090 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/3247096 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2025-7734?
- CVE-2025-7734 is a high-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2025-08-13.
- How severe is CVE-2025-7734?
- High severity. CVSS v3 base score is 8.7 out of 10.
- Is CVE-2025-7734 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.