{"cve":"CVE-2020-28270","nvd":{"published":"2020-11-12T18:15:15.877","modified":"2026-06-17T03:10:15.280","status":"Modified","description":"Prototype pollution vulnerability in 'object-hierarchy-access' versions 0.2.0 through 0.32.0 allows attacker to cause a denial of service and may lead to remote code execution.","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-1321"],"references":["https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572","https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28270","https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572","https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28270"],"products":["mjpclab:object-hierarchy-access"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-28270","score":0.03846,"percentile":0.90132,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-fxwf-45c7-4ppr","url":"https://osv.dev/vulnerability/GHSA-fxwf-45c7-4ppr","summary":"Prototype pollution in object-hierarchy-access","modified":"2023-11-08T04:03:24.526907Z","packages":[{"ecosystem":"npm","name":"object-hierarchy-access","purl":"pkg:npm/object-hierarchy-access","ranges":[">=0.2.0 <0.33.0"],"fixed":["0.33.0"]}]}],"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."]}