CVE-2024-8124: Inefficient Regular Expression Complexity in GitLab

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 40.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-12 · updated 2026-06-17
Weakness: CWE-1333

Description

An issue was discovered in GitLab CE/EE affecting all versions starting from 16.4 prior to 17.1.7, starting from 17.2 prior to 17.2.5, starting from 17.3 prior to 17.3.2 which could cause Denial of Service via sending a specific POST request.

Affected products

GitLab: from 16.4.0 before 17.1.7; from 17.2.0 before 17.2.5; from 17.3.0 before 17.3.2 — fixed in 17.1.7, 17.2.5, 17.3.2

How to fix

Upgrade to a fixed version: GitLab 17.1.7, 17.2.5, 17.3.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/480533
https://hackerone.com/reports/2634880
https://about.gitlab.com/releases/2024/09/11/patch-release-gitlab-17-3-2-released/

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