CVE-2025-12716

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that, under certain conditions could have allowed an authenticated user to perform unauthorized actions on behalf of another user by creating wiki pages with malicious content.

Affected

GitLab

CVSS v3.1 GITLAB

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

EPSS

0.43% chance of exploitation in the next 30 days, 36th percentile

Published

2025-12-11

Updated

2026-02-26

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3405832

Security advisories

• https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released

References

• CVE Record
• NVD entry