CVE-2025-4439
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
5.4
MEDIUM
CVSS 3.1
EPSS 0.18%
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.
How to fix CVE-2025-4439
To remediate CVE-2025-4439, upgrade the affected package to a fixed version below.
- —upgrade to 18.0.5 or later
Is CVE-2025-4439 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 15.10.0, < 18.0.5, >= 18.1.0, < 18.1.3, >= 18.2.0, < 18.2.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |