{"id":"CVE-2021-3820","aliases":["EUVD-2021-2129","GHSA-x55w-vjjp-222r"],"status":"published","title":"Inefficient Regular Expression Complexity in pksunkara/inflect","description":"inflect is vulnerable to Inefficient Regular Expression Complexity","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01222,"percentile":0.69137,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1333"],"published":"2021-09-27T12:25:26Z","modified":"2026-10-20T10:53:52Z","fixes":[{"ecosystem":"npm","package":"i","fixed_in":["0.3.7"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"i","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.7"}]}]},{"source":"osv","ecosystem":"npm","package":"i","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.3.7"}]}]}],"products":[{"vendor":"inflect_project","product":"inflect"},{"vendor":"pksunkara","product":"pksunkara/inflect"}],"references":[{"url":"https://huntr.dev/bounties/4612b31a-072b-4f61-a916-c7e4cbc2042a","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/pksunkara/inflect/commit/a9a0a8e9561c3487854c7cae42565d9652ec858b","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3820","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-x55w-vjjp-222r"},{"url":"https://github.com/pksunkara/inflect","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-3820","title":"Inefficient Regular Expression Complexity in pksunkara/inflect","description":"inflect is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-09-27T12:25:26Z","modified":"2024-08-03T17:09:09.527Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-2129","description":"inflect is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-09-27T12:25:26Z","modified":"2024-08-03T17:09:09Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T03:25:11.376657Z"}],"ghsa":[{"id":"GHSA-x55w-vjjp-222r","title":"inflect vulnerable to Inefficient Regular Expression Complexity","description":"inflect is customizable inflections for nodejs. inflect is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-09-29T17:12:19Z","modified":"2023-01-29T05:02:32Z","cvss":[{"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"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:36:25.064927Z"}],"nvd":[{"id":"CVE-2021-3820","description":"inflect is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-09-27T13:15:07.887Z","modified":"2026-06-17T04:05:50.11Z","cvss":[{"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":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:06:58.933037Z"}],"osv":[{"id":"CVE-2021-3820","description":"inflect is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-09-27T13:15:07.887Z","modified":"2026-10-20T10:53:52.669871751Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:44:20.843843Z"},{"id":"GHSA-x55w-vjjp-222r","title":"inflect vulnerable to Inefficient Regular Expression Complexity","description":"inflect is customizable inflections for nodejs. inflect is vulnerable to Inefficient Regular Expression Complexity","status":"published","published":"2021-09-29T17:12:19Z","modified":"2023-11-08T04:06:26.408707Z","cvss":[{"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"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T15:46:59.484835Z"}]}}