CVE-2025-12734 LOW

CVE-2025-12734: Improper Encoding or Escaping of Output in GitLab

Vendor Gitlab
Product GitLab
Weakness CWE-116
Published December 11, 2025
Last update December 16, 2025
View on NVD All CVEs

CVSS base score

3.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to, under certain conditions, render content in dialogs to other users by injecting malicious HTML content into merge request titles.

Key dates

02Disclosure timeline

December 11, 2025 CVE published
December 16, 2025 Record updated