Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to steal tokens and access private repositories by abusing incomplete validation in the Web IDE.
References (3)
Core 3
Core References
Broken Link, Issue Tracking issue-tracking
permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/555440
Permissions Required technical-description
exploit
permissions-required
https://hackerone.com/reports/3234976
Release Notes, Vendor Advisory
https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/
Scores
CVSS v3
8.0
EPSS
0.0018
EPSS Percentile
7.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-346
Status
published
Products (1)
gitlab/gitlab
18.2.0 - 18.6.6 (2 CPE variants)
Published
Feb 11, 2026
Tracked Since
Feb 18, 2026