{"id":"CVE-2021-23448","aliases":["GHSA-2w3f-9w3q-qw77","SNYK-JS-CONFIGHANDLER-1564947"],"url":"https://o3.security/vulnerability/CVE-2021-23448","summary":"Prototype Pollution in config-handler","details":"All versions of package config-handler are vulnerable to Prototype Pollution when loading config files.","published":"2021-10-11T21:15:07.480Z","modified":"2026-07-09T14:43:50.428884Z","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":2,"affectedPackages":[{"ecosystem":"npm","name":"config-handler","fixedVersion":null}],"fix":null,"references":[{"type":"REPORT","url":"https://snyk.io/vuln/SNYK-JS-CONFIGHANDLER-1564947"},{"type":"EVIDENCE","url":"https://github.com/jarradseers/config-handler/issues/1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T14:43:50.428884Z"}}