CVE-2023-3920

Incorrect Authorization in GitLab

An issue has been discovered in GitLab affecting all versions starting from 11.2 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible that a maintainer to create a fork relationship between existing projects contrary to the documentation.

Affected

GitLab

CVSS v3.1 NVD

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.45% chance of exploitation in the next 30 days, 38th percentile

Published

2023-09-29

Updated

2026-08-14

Proof-of-concept exploits (1)

• https://hackerone.com/reports/2058121

Security advisories

• https://gitlab.com/gitlab-org/gitlab/-/issues/417481

References

• CVE Record
• NVD entry