{"cve":"CVE-2021-22166","nvd":{"published":"2021-01-15T16:15:13.217","modified":"2026-06-17T03:36:43.643","status":"Modified","description":"An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request with a malformed method","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"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"],"products":["gitlab:gitlab"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-22166","score":0.01394,"percentile":0.72391,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}