CVE-2025-12716

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

State: Published
Severity: 8.7 High
Published: Dec 11, 2025
Updated: Feb 26, 2026
Reserved: Nov 4, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N	GitLab

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
GitLabGitLab	18.4 to before 18.4.6Affected 18.5 to before 18.5.4Affected 18.6 to before 18.6.2Affected

References

GitLab Issue #579548issue-trackingpermissions-required
HackerOne Bug Bounty Report #3405832technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/

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