CVE-2021-22252

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-23 · updated 2026-06-17

Description

A confusion between tag and branch names in GitLab CE/EE affecting all versions since 13.7 allowed a Developer to access protected CI variables which should only be accessible to Maintainers

Affected products

GitLab: from 13.7.0 before 13.12.9; from 14.0.0 before 14.0.7; from 14.1.0 before 14.1.2 — fixed in 13.12.9, 14.0.7, 14.1.2

How to fix

Upgrade to a fixed version: GitLab 13.12.9, 14.0.7, 14.1.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22252.json
https://gitlab.com/gitlab-org/gitlab/-/issues/330364
https://hackerone.com/reports/1186135
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22252.json
https://gitlab.com/gitlab-org/gitlab/-/issues/330364
https://hackerone.com/reports/1186135

Get alerted when CVE-2021-22252 or the next vulnerability affects your stack