{"id":"CVE-2020-28270","aliases":["GHSA-fxwf-45c7-4ppr"],"url":"https://o3.security/vulnerability/CVE-2020-28270","summary":"Prototype pollution in object-hierarchy-access","details":"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.","published":"2020-11-12T18:15:15.877Z","modified":"2026-07-08T17:57:26.783521Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"object-hierarchy-access","fixedVersion":"0.33.0"}],"fix":{"url":"https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572","label":"mjpclab/object-hierarchy-access@7b1aa13"},"references":[{"type":"FIX","url":"https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572"},{"type":"EVIDENCE","url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28270"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T17:57:26.783521Z"}}