{"cve":"CVE-2015-8855","nvd":{"published":"2017-01-23T21:59:00.503","modified":"2026-06-17T00:35:22.467","status":"Modified","description":"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).\"","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-399"],"references":["http://www.openwall.com/lists/oss-security/2016/04/20/11","http://www.securityfocus.com/bid/86957","https://nodesecurity.io/advisories/31","http://www.openwall.com/lists/oss-security/2016/04/20/11","http://www.securityfocus.com/bid/86957"],"products":["nodejs:node.js"],"source":"nvd","synced_at":"2026-10-19T20:41:25.729257544+00:00"},"epss":{"cve":"CVE-2015-8855","score":0.06887,"percentile":0.94072,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-x6fg-f45m-jf5q","url":"https://osv.dev/vulnerability/GHSA-x6fg-f45m-jf5q","summary":"Regular Expression Denial of Service in semver","modified":"2026-03-04T15:06:31.969299Z","packages":[{"ecosystem":"npm","name":"semver","purl":"pkg:npm/semver","ranges":[">=1.0.4 <4.3.2"],"fixed":["4.3.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}