Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.1 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 bypass WebAuthn two-factor authentication by manipulating the session state under certain conditions.
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/577847
Permissions Required technical-description
exploit
permissions-required
https://hackerone.com/reports/3322714
Scores
CVSS v3
6.8
EPSS
0.0027
EPSS Percentile
18.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-288
Status
published
Products (1)
gitlab/gitlab
13.1.0 - 18.4.6 (2 CPE variants)
Published
Dec 11, 2025
Tracked Since
Feb 18, 2026