{"id":"CVE-2022-2166","aliases":["BIT-mastodon-2022-2166","EUVD-2022-34451","GHSA-q5qv-4wvf-4v9h"],"status":"published","title":"Improper Restriction of Excessive Authentication Attempts in mastodon/mastodon","description":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01133,"percentile":0.66692,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-307"],"published":"2022-11-16T00:00:00Z","modified":"2026-10-28T02:31:13Z","fixes":[{"ecosystem":"Bitnami","package":"mastodon","fixed_in":["3.5.6"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mastodon","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.5.6"}]}]}],"products":[{"vendor":"joinmastodon","product":"mastodon"},{"vendor":"mastodon","product":"mastodon/mastodon"}],"references":[{"url":"https://huntr.dev/bounties/2f96f990-01c2-44ea-ae47-58bdb3aa455b","tags":["x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/mastodon/mastodon/commit/21fd25a269cca742af431f0d13299e139f267346","tags":["x_transferred","Patch","Third Party Advisory","advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-2166","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-q5qv-4wvf-4v9h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/2xxx/CVE-2022-2166.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2022-2166","title":"Improper Restriction of Excessive Authentication Attempts in mastodon/mastodon","description":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.","status":"published","published":"2022-11-16T00:00:00Z","modified":"2025-04-29T20:30:40.434Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:34:32.495407Z"}],"euvd":[{"id":"EUVD-2022-34451","description":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.","status":"published","published":"2022-11-16T00:00:00Z","modified":"2025-04-29T20:30:40Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:52:00.012701Z"}],"ghsa":[{"id":"GHSA-q5qv-4wvf-4v9h","title":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon...","description":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.","status":"published","published":"2022-11-16T12:00:20Z","modified":"2023-01-28T05:03:19Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:43:57.475723Z"}],"nvd":[{"id":"CVE-2022-2166","description":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.","status":"published","published":"2022-11-16T01:15:10.207Z","modified":"2026-06-17T04:41:25.643Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:07:32.395456Z"}],"osv":[{"id":"CVE-2022-2166","title":"Improper Restriction of Excessive Authentication Attempts in mastodon/mastodon","description":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.","status":"published","published":"2022-11-16T00:00:00Z","modified":"2026-10-28T02:31:13.989412925Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T15:44:23.655778Z"},{"id":"BIT-mastodon-2022-2166","title":"Improper Restriction of Excessive Authentication Attempts in mastodon/mastodon","description":"Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.","status":"published","published":"2025-11-06T15:08:22.357Z","modified":"2026-09-08T08:48:13.26445859Z","updated_at":"2026-11-02T15:28:32.645004Z"}]}}