Vulnerability · Published Jun 12, 2025 · Assigned by GitLab
CVE-2025-4278Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLab
High 8.7
In plain English
A high-severity security flaw 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 10.9% (higher than 96% of all known vulnerabilities).
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)10.9%top 4.1% 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 starting with 18.0 before 18.0.2. Under certain conditions html injection in new search page could lead to account takeover.
Affected products (as reported)
Weakness: CWE-80 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
References
- GitLab Issue #539198 issue-tracking, permissions-required
- HackerOne Bug Bounty Report #3085738 technical-description, exploit, permissions-required