CVE-2021-22231

Severity: medium (CVSS 4.3 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: 2021-07-07 · updated 2026-06-17

Description

A denial of service in user's profile page is found starting with GitLab CE/EE 8.0 that allows attacker to reject access to their profile page via using a specially crafted username.

Affected products

GitLab: from 8.0.0 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-2021-22231.json
https://gitlab.com/gitlab-org/gitlab/-/issues/26295
https://hackerone.com/reports/475098
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22231.json
https://gitlab.com/gitlab-org/gitlab/-/issues/26295
https://hackerone.com/reports/475098

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