CVE-2021-39930

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-12-13 · updated 2026-06-17
Weakness: CWE-863

Description

Missing authorization in GitLab EE versions between 12.4 and 14.3.6, between 14.4.0 and 14.4.4, and between 14.5.0 and 14.5.2 allowed an attacker to access a user's custom project and group templates

Affected products

GitLab: from 12.4.0 before 14.3.6; from 14.4.0 before 14.4.4; from 14.5.0 before 14.5.2 — fixed in 14.3.6, 14.4.4, 14.5.2

How to fix

Upgrade to a fixed version: GitLab 14.3.6, 14.4.4, 14.5.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39930.json
https://gitlab.com/gitlab-org/gitlab/-/issues/26103
https://hackerone.com/reports/475240
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39930.json
https://gitlab.com/gitlab-org/gitlab/-/issues/26103
https://hackerone.com/reports/475240

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