CVE-2025-8405 HIGH

CVE-2025-8405: Improper Encoding or Escaping of Output in GitLab

Vendor Gitlab
Product GitLab
Weakness CWE-116
Published December 11, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

7.7/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 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 perform unauthorized actions on behalf of other users by injecting malicious HTML into vulnerability code flow displays.

Key dates

02Disclosure timeline

December 11, 2025 CVE published
February 26, 2026 Record updated