{"id":"CVE-2015-8855","aliases":["GHSA-x6fg-f45m-jf5q"],"url":"https://o3.security/vulnerability/CVE-2015-8855","summary":"Regular Expression Denial of Service in semver","details":"Versions 4.3.1 and earlier of `semver` are affected by a regular expression denial of service vulnerability when extremely long version strings are parsed.\n\n\n\n## Recommendation\n\nUpdate to version 4.3.2 or later","published":"2017-01-23T21:59:00Z","modified":"2026-04-10T03:45:35.159436Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"semver","fixedVersion":"4.3.2"}],"fix":{"url":"https://github.com/github/advisory-database/pull/7102","label":"github/advisory-database#7102"},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2016/04/20/11"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/86957"},{"type":"ADVISORY","url":"https://nodesecurity.io/advisories/31"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8855"},{"type":"WEB","url":"https://github.com/github/advisory-database/pull/7102"},{"type":"WEB","url":"https://github.com/npm/node-semver/commit/5c4c9f6e26c7052a42b5ced2a7481c5c9b4363a0"},{"type":"WEB","url":"https://github.com/npm/node-semver/commit/c80180d8341a8ada0236815c29a2be59864afd70"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-x6fg-f45m-jf5q"},{"type":"PACKAGE","url":"https://github.com/npm/node-semver"},{"type":"WEB","url":"https://www.npmjs.com/advisories/31"},{"type":"WEB","url":"https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-10T03:45:35.159436Z"}}