CVE-2022-4131

Severity: medium (CVSS 5.3 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: 2023-01-12 · updated 2026-06-17
Weakness: CWE-1333

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.8 before 15.5.7, all versions starting from 15.6 before 15.6.4, all versions starting from 15.7 before 15.7.2. An attacker may cause Denial of Service on a GitLab instance by exploiting a regex issue in how the application parses user agents.

Affected products

GitLab: from 10.8.0 before 15.5.7; from 15.6.0 before 15.6.4; from 15.7.0 before 15.7.2 — fixed in 15.5.7, 15.6.4, 15.7.2

How to fix

Upgrade to a fixed version: GitLab 15.5.7, 15.6.4, 15.7.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-4131.json
https://gitlab.com/gitlab-org/gitlab/-/issues/383598
https://hackerone.com/reports/1772063
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-4131.json
https://gitlab.com/gitlab-org/gitlab/-/issues/383598
https://hackerone.com/reports/1772063

Get alerted when CVE-2022-4131 or the next vulnerability affects your stack