Cross-Site Scripting Vulnerability in GitLab CE/EE
CVE-2025-4439

5.4MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
23 July 2025

What is CVE-2025-4439?

A cross-site scripting vulnerability has been identified in GitLab Community Edition (CE) and Enterprise Edition (EE) that affects a range of versions before specified patches. This flaw can potentially allow an authenticated user to execute malicious scripts within the context of other users. The vulnerability is more pronounced when the GitLab instance is served via specific content delivery networks, increasing the risk of exploitation. Users are strongly advised to update to the latest versions to mitigate the risks associated with this vulnerability.

Affected Version(s)

GitLab 15.10 < 18.0.5

GitLab 18.1 < 18.1.3

GitLab 18.2 < 18.2.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/541177
issue-trackingpermissions-required
https://hackerone.com/reports/3120111
technical-descriptionexploitpermissions-required

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program
.
CVE-2025-4439 : Cross-Site Scripting Vulnerability in GitLab CE/EE