CVE-2021-39933: Medium severity gitlab vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-39933?
The severity of CVE-2021-39933 is medium with a severity value of 6.5.
How does CVE-2021-39933 affect GitLab CE/EE?
CVE-2021-39933 affects all versions of GitLab CE/EE starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, and all versions starting from 14.5 before 14.5.2.
What is the vulnerability description of CVE-2021-39933?
CVE-2021-39933 is a vulnerability in GitLab CE/EE where a regular expression used for handling user input (notes, comments, etc) is susceptible to catastrophic backtracking.
How can I fix CVE-2021-39933?
To fix CVE-2021-39933, it is recommended to upgrade GitLab CE/EE to versions 14.3.6, 14.4.4, or 14.5.2 or later.
Where can I find more information about CVE-2021-39933?
More information about CVE-2021-39933 can be found at the following references: [Reference 1](https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json), [Reference 2](https://gitlab.com/gitlab-org/gitlab/-/issues/340449), [Reference 3](https://hackerone.com/reports/1320077).