{"id":"CVE-2021-23329","aliases":["GHSA-c497-v8pv-ch6x","SNYK-JS-NESTEDOBJECTASSIGN-1065977"],"url":"https://o3.security/vulnerability/CVE-2021-23329","summary":"Prototype pollution in nested-object-assign","details":"The package nested-object-assign before 1.0.4 are vulnerable to Prototype Pollution via the default function, as demonstrated by running the PoC below.","published":"2021-01-31T16:15:12.377Z","modified":"2026-07-09T12:33:04.790774Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"nested-object-assign","fixedVersion":"1.0.4"}],"fix":{"url":"https://github.com/Geta/NestedObjectAssign/pull/11","label":"Geta/NestedObjectAssign#11"},"references":[{"type":"FIX","url":"https://github.com/Geta/NestedObjectAssign/pull/11"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JS-NESTEDOBJECTASSIGN-1065977"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T12:33:04.790774Z"}}