CVE-2021-22223

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-06 · updated 2026-06-17
Weakness: CWE-79

Description

Client-Side code injection through Feature Flag name in GitLab CE/EE starting with 11.9 allows a specially crafted feature flag name to PUT requests on behalf of other users via clicking on a link

Affected products

GitLab: from 13.9.0 before 13.11.6; from 13.12.0 before 13.12.6; from 14.0.0 before 14.0.2 — fixed in 13.11.6, 13.12.6, 14.0.2

How to fix

Upgrade to a fixed version: GitLab 13.11.6, 13.12.6, 14.0.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22223.json
https://gitlab.com/gitlab-org/gitlab/-/issues/293946
https://hackerone.com/reports/1059557
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22223.json
https://gitlab.com/gitlab-org/gitlab/-/issues/293946
https://hackerone.com/reports/1059557

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