CVE-2021-22254

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-20 · updated 2026-06-17
Weakness: CWE-116

Description

Under very specific conditions a user could be impersonated using Gitlab shell. This vulnerability affects GitLab CE/EE 13.1 and later through 14.1.2, 14.0.7 and 13.12.9.

Affected products

GitLab: from 13.1.0 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-2021-22254.json
https://gitlab.com/gitlab-org/gitlab/-/issues/300265
https://hackerone.com/reports/1087806
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22254.json
https://gitlab.com/gitlab-org/gitlab/-/issues/300265
https://hackerone.com/reports/1087806

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