VULNERABILITY INTELLIGENCE

CVE-2021-39917

CVSS score4.3 MEDIUM

EPSS probability1.37%

CISA KEVNot currently listed

Published2021-12-13

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.9 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 related to quick actions features was susceptible to catastrophic backtracking that could cause a DOS attack.

Weakness classification

nvd@nist.gov: CWE-697

Primary references

cve@gitlab.com — Vendor Advisory
cve@gitlab.com — Broken Link
cve@gitlab.com — Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Broken Link
af854a3a-2127-422b-91ae-364da2661108 — Permissions Required, Third Party Advisory