HTML Injection Vulnerability in GitLab CE/EE by GitLab
CVE-2025-6186

8.7HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
13 August 2025

What is CVE-2025-6186?

An issue has been identified in GitLab CE/EE, affecting certain versions, where authenticated users can exploit a vulnerability to perform account takeover. By injecting malicious HTML into work item names, attackers can manipulate the application's behavior, possibly compromising user accounts and sensitive information.

Affected Version(s)

GitLab 18.1 < 18.1.4

GitLab 18.2 < 18.2.2

References

https://gitlab.com/gitlab-org/gitlab/-/issues/549844
issue-trackingpermissions-required
https://hackerone.com/reports/3189522
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
.
CVE-2025-6186 : HTML Injection Vulnerability in GitLab CE/EE by GitLab