{"id":"CVE-2020-7767","aliases":["EUVD-2021-1041","GHSA-cf2x-rqc8-grfq"],"status":"published","title":"Regular Expression Denial of Service (ReDoS)","description":"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.","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/E:P/RL:U/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0164,"percentile":0.76699,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2020-11-11T10:20:21Z","modified":"2026-06-17T03:25:24Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"express-validators","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.0.4"}]}]},{"source":"osv","ecosystem":"npm","package":"express-validators","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.0.4"}]}]}],"products":[{"vendor":"express-validators_project","product":"express-validators"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-EXPRESSVALIDATORS-1017404","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7767","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cf2x-rqc8-grfq"}],"sources":{"cve":[{"id":"CVE-2020-7767","title":"Regular Expression Denial of Service (ReDoS)","description":"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.","status":"published","published":"2020-11-11T10:20:21.655Z","modified":"2024-09-16T19:25:17.261Z","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/E:P/RL:U/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:58.787905Z"}],"euvd":[{"id":"EUVD-2021-1041","description":"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.","status":"published","published":"2020-11-11T10:20:21Z","modified":"2024-09-16T19:25:17Z","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/E:P/RL:U/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:55:23.186812Z"}],"ghsa":[{"id":"GHSA-cf2x-rqc8-grfq","title":"Regular expression deinal of service in express-validators","description":"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.","status":"published","published":"2021-05-10T19:16:27Z","modified":"2023-02-01T05:05:25Z","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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:36:34.260786Z"}],"nvd":[{"id":"CVE-2020-7767","description":"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.","status":"published","published":"2020-11-11T11:15:10.82Z","modified":"2026-06-17T03:25:24.627Z","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":"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":"2026-11-02T14:06:24.137599Z"}],"osv":[{"id":"GHSA-cf2x-rqc8-grfq","title":"Regular expression deinal of service in express-validators","description":"All versions of package express-validators are vulnerable to Regular Expression Denial of Service (ReDoS) when validating specifically-crafted invalid urls.","status":"published","published":"2021-05-10T19:16:27Z","modified":"2023-11-08T04:04:09.360531Z","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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:44.927642Z"}]}}