CVE-2025-4439
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | gitlab |
| Product | gitlab |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 23, 2025 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
GitLab / GitLab
15.10 < 18.0.5 18.1 < 18.1.3 18.2 < 18.2.1
References
Credits
Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program