What’s Vulnerable › Vulnerabilities

CVE-2021-22166

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-15 · updated 2026-06-17
• Weakness: CWE-400

Description

An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request with a malformed method

Affected products

• GitLab: from 13.7.0 before 13.7.2 — fixed in 13.7.2

How to fix

Upgrade to a fixed version: GitLab 13.7.2. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22166.json
• https://gitlab.com/gitlab-org/labkit/-/issues/29
• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22166.json
• https://gitlab.com/gitlab-org/labkit/-/issues/29

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