Unrated severityNVD Advisory· Published Jul 23, 2025· Updated Feb 26, 2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
CVE-2025-4439
Description
An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.
Affected products
2cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*range: 15.10
- (no CPE)range: >=15.10 <18.0.5 || >=18.1 <18.1.3 || >=18.2 <18.2.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- hackerone.com/reports/3120111mitretechnical-descriptionexploitpermissions-required
- gitlab.com/gitlab-org/gitlab/-/issues/541177mitreissue-trackingpermissions-required
News mentions
1- GitLab Patch Release: 18.2.1, 18.1.3, 18.0.5GitLab Security Releases · Jul 23, 2025