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.

Related CVEs

CVE-2021-39933

Key Information

GHSA ID

GHSA-26gq-p245-cq98

Published

December 14, 2021 12:00 AM

Last Modified

August 8, 2023 3:31 PM

CVSS Score

5.0 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: June 17, 2025 6:25 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.