Vulnerability · Published Aug 13, 2025 · Assigned by GitLab
CVE-2025-6186Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
High 8.7
In plain English
A high-severity cross-site scripting in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)0.3%top 75.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
References
- GitLab Issue #549844 issue-tracking, permissions-required
- HackerOne Bug Bounty Report #3189522 technical-description, exploit, permissions-required