CVE-2024-3959: Improper Authorization in GitLab

Severity: medium (CVSS 6.5 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: 2024-06-27 · updated 2026-06-17
Weakness: CWE-285

Description

An issue was discovered in GitLab CE/EE affecting all versions starting from 16.7 prior to 16.11.5, starting from 17.0 prior to 17.0.3, and starting from 17.1 prior to 17.1.1, which allows private job artifacts can be accessed by any user.

Affected products

GitLab: from 16.7.0 before 16.11.5; from 17.0.0 before 17.0.3; 17.1.0 — fixed in 16.11.5, 17.0.3

How to fix

Upgrade to a fixed version: GitLab 16.11.5, 17.0.3. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/456989
https://hackerone.com/reports/2456845
https://gitlab.com/gitlab-org/gitlab/-/issues/456989
https://hackerone.com/reports/2456845

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