{"id":"CVE-2021-43306","aliases":["GHSA-j9m2-h2pv-wvph"],"url":"https://o3.security/vulnerability/CVE-2021-43306","summary":"Regular expression denial of service in jquery-validation","details":"An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the jquery-validation npm package, when an attacker is able to supply arbitrary input to the url2 method","published":"2022-06-02T14:15:30.923Z","modified":"2026-07-09T00:37:43.186750Z","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":{"score":0.01499,"percentile":0.7296,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"jquery-validation","fixedVersion":"1.19.4"}],"fix":{"url":"https://github.com/jquery-validation/jquery-validation/pull/2428","label":"jquery-validation/jquery-validation#2428"},"references":[{"type":"EVIDENCE","url":"https://research.jfrog.com/vulnerabilities/jquery-validation-redos-xray-211348/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43306"},{"type":"WEB","url":"https://github.com/jquery-validation/jquery-validation/pull/2428"},{"type":"WEB","url":"https://github.com/jquery-validation/jquery-validation/commit/69cb17ed774b427f7e2ffcdf197968231725c30e"},{"type":"PACKAGE","url":"https://github.com/jquery-validation/jquery-validation"},{"type":"WEB","url":"https://research.jfrog.com/vulnerabilities/jquery-validation-redos-xray-211348"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:37:43.186750Z"}}