{"id":"CVE-2021-23449","aliases":["GHSA-rjf2-j2r6-q8gr","SNYK-JS-VM2-1585918"],"url":"https://o3.security/vulnerability/CVE-2021-23449","summary":"Prototype Pollution in vm2","details":"This affects the package vm2 before 3.9.4 via a Prototype Pollution attack vector, which can lead to execution of arbitrary code on the host machine.","published":"2021-10-18T17:15:07.790Z","modified":"2026-08-07T15:13:57.783477Z","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"vm2","fixedVersion":"3.9.4"}],"fix":{"url":"https://github.com/patriksimek/vm2/commit/b4f6e2bd2c4a1ef52fc4483d8e35f28bc4481886","label":"patriksimek/vm2@b4f6e2b"},"references":[{"type":"ADVISORY","url":"https://github.com/patriksimek/vm2/issues/363"},{"type":"ADVISORY","url":"https://github.com/patriksimek/vm2/releases/tag/3.9.4"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20211029-0010/"},{"type":"FIX","url":"https://github.com/patriksimek/vm2/commit/b4f6e2bd2c4a1ef52fc4483d8e35f28bc4481886"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JS-VM2-1585918"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:13:57.783477Z"}}