Vulnerability · Published Dec 13, 2021 · Assigned by GitLab

CVE-2021-39940

Medium 4.3

In plain English

A medium-severity security flaw in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 75% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)1.6%top 24.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.2 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. GitLab Maven Package registry is vulnerable to a regular expression denial of service when a specifically crafted string is sent.

Affected products (as reported)

Vendor	Product	Versions
GitLab	GitLab	>=14.5, <14.5.2>=14.4, <14.4.4>=13.2, <14.3.6

References

https://gitlab.com/gitlab-org/gitlab/-/issues/263116 x_refsource_MISC
https://hackerone.com/reports/997961 x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39940.json x_refsource_CONFIRM