{"id":"CVE-2020-28501","aliases":[],"url":"https://o3.security/vulnerability/CVE-2020-28501","summary":"Regular Expression Denial of Service (ReDoS) in es6-crawler-detect","details":"This affects the package es6-crawler-detect before 3.1.3. No limitation of user agent string length supplied to regex operators.","published":"2021-04-13T15:19:39Z","modified":"2026-03-13T22:11:35.700627Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"es6-crawler-detect","fixedVersion":"3.1.3"}],"fix":{"url":"https://github.com/JefferyHus/es6-crawler-detect/pull/27","label":"JefferyHus/es6-crawler-detect#27"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28501"},{"type":"WEB","url":"https://github.com/JefferyHus/es6-crawler-detect/pull/27"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JS-ES6CRAWLERDETECT-1051529"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-13T22:11:35.700627Z"}}