{"id":"CVE-2021-23807","aliases":["GHSA-282f-qqgm-c34q"],"url":"https://o3.security/vulnerability/CVE-2021-23807","summary":"Prototype Pollution in node-jsonpointer","details":"This affects the package jsonpointer before 5.0.0. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.","published":"2021-11-03T18:15:08.230Z","modified":"2026-07-08T21:27:03.483861Z","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":"jsonpointer","fixedVersion":"5.0.0"},{"ecosystem":"npm","name":"org.webjars.npm:json-pointer","fixedVersion":"5.0.0"}],"fix":{"url":"https://github.com/janl/node-jsonpointer/commit/a0345f3550cd9c4d89f33b126390202b89510ad4","label":"janl/node-jsonpointer@a0345f3"},"references":[{"type":"FIX","url":"https://github.com/janl/node-jsonpointer/commit/a0345f3550cd9c4d89f33b126390202b89510ad4"},{"type":"FIX","url":"https://github.com/janl/node-jsonpointer/pull/51"},{"type":"FIX","url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1910273"},{"type":"FIX","url":"https://snyk.io/vuln/SNYK-JS-JSONPOINTER-1577288"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T21:27:03.483861Z"}}