CVE-2025-12669
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.
Summary dbcve.org
A stored cross-site scripting (XSS) vulnerability in GitLab's email notification system allows authenticated users to inject malicious HTML and JavaScript into fields that are rendered in email notifications sent to other users. The vulnerability stems from improper input sanitization of user-supplied content before it is included in outbound emails.
Mitigation
Upgrade GitLab to version 18.9.7, 18.10.6, 18.11.3 or later. If immediate upgrading is not feasible, consider temporarily disabling or externally filtering email notifications containing user-generated content.