CVE-2024-0456: Direct Request ('Forced Browsing') in GitLab

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-01-26 · updated 2026-06-17
Weakness: CWE-425

Description

An authorization vulnerability exists in GitLab versions 14.0 prior to 16.6.6, 16.7 prior to 16.7.4, and 16.8 prior to 16.8.1. An unauthorized attacker is able to assign arbitrary users to MRs that they created within the project

Affected products

GitLab: from 14.0.0 before 16.6.6; from 16.7.0 before 16.7.4; 16.8.0 — fixed in 16.6.6, 16.7.4

How to fix

Upgrade to a fixed version: GitLab 16.6.6, 16.7.4. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/releases/2024/01/25/critical-security-release-gitlab-16-8-1-released/
https://gitlab.com/gitlab-org/gitlab/-/issues/430726
https://about.gitlab.com/releases/2024/01/25/critical-security-release-gitlab-16-8-1-released/
https://gitlab.com/gitlab-org/gitlab/-/issues/430726

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