Vulnerability · Published Apr 1, 2022 · Assigned by GitLab

CVE-2021-39908

Medium 6.5

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 1.3% (higher than 70% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)1.3%top 30.1% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

In all versions of GitLab CE/EE starting from 0.8.0 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 certain Unicode characters can be abused to commit malicious code into projects without being noticed in merge request or source code viewer UI.

Affected products (as reported)

Vendor	Product	Versions
GitLab	GitLab	>=0.8.0, <14.2.6>=14.3, <14.3.4>=14.4, <14.4.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/337193 x_refsource_MISC
https://hackerone.com/reports/1280077 x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39908.json x_refsource_CONFIRM