Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to bypass access control restrictions and view GitLab Pages content intended only for project members by authenticating through OAuth providers.
References (3)
Core 3
Core References
Broken Link issue-tracking
permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/556098
Permissions Required technical-description
exploit
permissions-required
https://hackerone.com/reports/3250156
Release Notes, Vendor Advisory
https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/
Scores
CVSS v3
3.1
EPSS
0.0001
EPSS Percentile
2.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (1)
gitlab/gitlab
17.9.0 - 18.3.6 (2 CPE variants)
Published
Nov 15, 2025
Tracked Since
Feb 18, 2026