Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user with project owner permissions to bypass group fork prevention settings due to improper authorization checks.
References (3)
Core 3
Core References
Exploit technical-description
exploit
permissions-required
HackerOne Bug Bounty Report #3275222
https://hackerone.com/reports/3275222
Scores
CVSS v3
2.7
EPSS
0.0002
EPSS Percentile
4.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (5)
gitlab/gitlab
18.11.0 (2 CPE variants)
GitLab/GitLab
11.2 - 18.9.6
gitlab/gitlab
11.2.0 - 18.9.6 (2 CPE variants)
GitLab/GitLab
18.10 - 18.10.4
GitLab/GitLab
18.11 - 18.11.1
Published
Apr 22, 2026
Tracked Since
Apr 22, 2026