CVE-2023-3484: Incorrect Authorization in GitLab

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-21 · updated 2026-06-17
Weakness: CWE-863

Description

An issue has been discovered in GitLab EE affecting all versions starting from 12.8 before 15.11.11, all versions starting from 16.0 before 16.0.7, all versions starting from 16.1 before 16.1.2. An attacker could change the name or path of a public top-level group in certain situations.

Affected products

GitLab: from 12.8.0 before 15.11.11; from 16.0.0 before 16.0.7; from 16.1.0 before 16.1.2 — fixed in 15.11.11, 16.0.7, 16.1.2

How to fix

Upgrade to a fixed version: GitLab 15.11.11, 16.0.7, 16.1.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/416773
https://hackerone.com/reports/2035687
https://about.gitlab.com/releases/2023/07/05/security-release-gitlab-16-1-2-released/
https://gitlab.com/gitlab-org/gitlab/-/issues/416773
https://hackerone.com/reports/2035687

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