CVE-2021-39933

—

CVSS 3.1

6.5 medium

EPSS

1%p71

Published

Dec 13, 2021 (Dec 13, 2021)

Modified

Jun 17, 2026

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments, etc) was susceptible to catastrophic backtracking that could cause a DOS attack.

Vendors: gitlab
Products: gitlab
Weakness: CWE-1333
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.4%)

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