Vulnerability · Published May 14, 2026 · Assigned by GitLab
CVE-2025-12669Improper Control of Generation of Code ('Code Injection') in GitLab
Medium 5.4
In plain English
A medium-severity code injection 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 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.2%top 92.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to inject HTML and JavaScript into email notifications sent to other users due to improper input sanitization.
Affected products (as reported)
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
References
- HackerOne Bug Bounty Report #3368096 technical-description, exploit, permissions-required
- https://gitlab.com/gitlab-org/gitlab/-/work_items/579385
- https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/