CVE-2025-6186

Public Exploit
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 18.1 before 18.1.4, and 18.2 before 18.2.2 that could have allowed authenticated users to achieve account takeover by injecting malicious HTML into work item names.

Remediation

Solution:

  • Upgrade to versions 18.1.4, 18.2.2 or above.

Category

8.7
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.02%
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/549844 broken link issue tracking permissions required
https://hackerone.com/reports/3189522 technical description exploit permissions required

Frequently Asked Questions

What is the severity of CVE-2025-6186?
CVE-2025-6186 has been scored as a high severity vulnerability.
How to fix CVE-2025-6186?
To fix CVE-2025-6186: Upgrade to versions 18.1.4, 18.2.2 or above.
Is CVE-2025-6186 being actively exploited in the wild?
It is possible that CVE-2025-6186 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-6186?
CVE-2025-6186 affects GitLab GitLab.
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