{"id":"CVE-2021-22166","aliases":["BIT-gitlab-2021-22166","EUVD-2021-9312","GHSA-fj94-q44p-pf8f","UBUNTU-CVE-2021-22166"],"status":"published","title":"An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request...","description":"An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request with a malformed method","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01394,"percentile":0.72609,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2021-01-15T15:13:51Z","modified":"2026-10-30T10:30:53Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["13.7.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"13.7.0"},{"fixed":"13.7.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"gitlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.4.3+dfsg-9","8.4.3+dfsg-12","8.5.8+dfsg-5"]}],"products":[{"vendor":"gitlab","product":"gitlab"}],"references":[{"url":"https://gitlab.com/gitlab-org/labkit/-/issues/29","tags":["x_refsource_MISC","x_transferred","Broken Link","web","report"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22166.json","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22166","tags":["web"]},{"url":"https://github.com/advisories/GHSA-fj94-q44p-pf8f"},{"url":"https://ubuntu.com/security/CVE-2021-22166","tags":["report"]},{"url":"https://about.gitlab.com/releases/2021/01/07/security-release-gitlab-13-7-2-released/","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-22166","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-22166","description":"An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request with a malformed 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method","status":"published","published":"2022-05-24T17:39:23Z","modified":"2023-01-29T05:05:04Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:45:42.123832Z"}],"nvd":[{"id":"CVE-2021-22166","description":"An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request with a malformed method","status":"published","published":"2021-01-15T16:15:13.217Z","modified":"2026-06-17T03:36:43.643Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:06:49.284888Z"}],"osv":[{"id":"CVE-2021-22166","description":"An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request with 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method","status":"published","published":"2024-03-06T11:20:44.62Z","modified":"2026-09-08T08:48:23.080494257Z","updated_at":"2026-11-02T15:28:29.999658Z"}]}}