{"id":"CVE-2021-23702","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-23702","summary":"Prototype Pollution in object-extend","details":"The package object-extend from 0.0.0 through 0.5.0 is vulnerable to Prototype Pollution via object-extend.","published":"2022-02-19T00:01:25Z","modified":"2026-03-14T01:41:21.731610Z","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-extend","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23702"},{"type":"PACKAGE","url":"https://github.com/bernhardw/object-extend"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JS-OBJECTEXTEND-2401470"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-14T01:41:21.731610Z"}}