RCE in GitLab
CVE-2025-12669
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- GitLab — versions 15.11, 18.10, 18.11
Weakness classification (CWE)
References
- hackerone.com/reports/3368096 (Permissions Required, technical-description, permissions-required, exploit)
- gitlab.com/gitlab-org/gitlab/-/work_items/579385 (Not Applicable)
- about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/ (Release Notes)
Frequently asked questions
- What is CVE-2025-12669?
- CVE-2025-12669 is a medium-severity vulnerability in GitLab, classified under Code Injection. CVSS score: 5.4/10. Published 2026-05-14.
- How severe is CVE-2025-12669?
- Medium severity. CVSS v3 base score is 5.4 out of 10.