{"cve":"CVE-2020-8147","nvd":{"published":"2020-04-03T21:15:12.780","modified":"2026-06-17T03:25:56.500","status":"Modified","description":"Flaw in input validation in npm package utils-extend version 1.0.8 and earlier may allow prototype pollution attack that may result in remote code execution or denial of service of applications using utils-extend.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-20","CWE-471"],"references":["https://hackerone.com/reports/801522","https://hackerone.com/reports/801522"],"products":["utils-extend_project:utils-extend"],"source":"nvd","synced_at":"2026-10-19T21:03:08.679916934+00:00"},"epss":{"cve":"CVE-2020-8147","score":0.03149,"percentile":0.87943,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6pq3-928q-x6w6","url":"https://osv.dev/vulnerability/GHSA-6pq3-928q-x6w6","summary":"Prototype Pollution","modified":"2023-11-08T04:04:14.320845Z","packages":[{"ecosystem":"npm","name":"utils-extend","purl":"pkg:npm/utils-extend","ranges":[">=0.0.0"],"fixed":[]}]}],"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."]}