CVE-2023-4658

Incorrect Authorization in GitLab

An issue has been discovered in GitLab EE affecting all versions starting from 8.13 before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. It was possible for an attacker to abuse the `Allowed to merge` permission as a guest user, when granted the permission through a group.

Affected

GitLab

CVSS v3.1 NVD

3.1 LOWCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.47% chance of exploitation in the next 30 days, 39th percentile

Published

2023-12-01

Updated

2026-04-26

Proof-of-concept exploits (1)

• https://hackerone.com/reports/2104540

Security advisories

• https://gitlab.com/gitlab-org/gitlab/-/issues/423835

References

• CVE Record
• NVD entry