{"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":"The semver package before 4.3.2 for Node.js allows attackers to cause a denial of service (CPU consumption) via a long version string, aka a \"regular expression denial of service (ReDoS).\"","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":null,"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":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2016/04/20/11"},{"type":"FIX","url":"https://nodesecurity.io/advisories/31"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-10T03:45:35.159436Z"}}