{"id":"CVE-2020-7754","aliases":["GHSA-pw54-mh39-w3hc","GHSA-xgh6-85xh-479p"],"url":"https://o3.security/vulnerability/CVE-2020-7754","summary":"Regular expression denial of service in npm-user-validate","details":"This affects the package npm-user-validate before 1.0.1. The regex that validates user emails took exponentially longer to process long input strings beginning with @ characters.","published":"2020-10-27T15:15:13.123Z","modified":"2026-07-09T12:33:15.298504Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"npm-user-validate","fixedVersion":"1.0.1"}],"fix":{"url":"https://github.com/npm/npm-user-validate/commit/c8a87dac1a4cc6988b5418f30411a8669bef204e","label":"npm/npm-user-validate@c8a87da"},"references":[{"type":"ADVISORY","url":"https://github.com/npm/npm-user-validate/security/advisories/GHSA-xgh6-85xh-479p"},{"type":"FIX","url":"https://github.com/npm/npm-user-validate/commit/c8a87dac1a4cc6988b5418f30411a8669bef204e"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019353"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JS-NPMUSERVALIDATE-1019352"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T12:33:15.298504Z"}}