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.
References (3)
Core 3
Core References
Release Notes, Vendor Advisory
https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/
Broken Link issue-tracking
permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/579548
Permissions Required technical-description
exploit
permissions-required
https://hackerone.com/reports/3405832
Scores
CVSS v3
8.7
EPSS
0.0005
EPSS Percentile
16.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (1)
gitlab/gitlab
18.4.0 - 18.4.6 (2 CPE variants)
Published
Dec 11, 2025
Tracked Since
Feb 18, 2026