HTML Injection in GitLab CE/EE Leading to Account Takeover Vulnerabilities
CVE-2025-4278

8.7HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
12 June 2025

What is CVE-2025-4278?

A vulnerability has been identified in GitLab CE/EE that allows for HTML injection in the new search page. This flaw affects all versions starting from 18.0 up to, but not including, 18.0.2. Under specific conditions, an attacker could exploit this vulnerability to gain unauthorized access to user accounts, potentially leading to account takeover. It is crucial for users of affected versions to update to the latest available release to mitigate this risk and ensure the security of their data.

Affected Version(s)

GitLab 18.0 < 18.0.2

References

https://gitlab.com/gitlab-org/gitlab/-/issues/539198
issue-trackingpermissions-required
https://hackerone.com/reports/3085738
technical-descriptionexploitpermissions-required

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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
.