Name: CVE-2023-3909: Inefficient Regular Expression Complexity
Creator: Rapid7
Published: 2023-11-06T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2023-3909, CWE-1333, CVSS 4.3, EPSS 0.006

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.3 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. A Regular Expression Denial of Service was possible by adding a large string in timeout input in gitlab-ci.yml file.

CVSS Details

CVSS 3.1 Base Score: 4.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Freebsd	—	Upgrade gitlab-ce	Dec 10, 2025	Nov 1, 2023
Gitlab Gitlab	—	Upgrade Gitlab to the latest version	Apr 22, 2025	Nov 6, 2023

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CVSS Details

Covered by Rapid7

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