{"id":"CVE-2021-21297","aliases":["GHSA-xp9c-82x8-7f67"],"url":"https://o3.security/vulnerability/CVE-2021-21297","summary":"Prototype Pollution in Node-Red","details":"Node-Red is a low-code programming for event-driven applications built using nodejs. Node-RED 1.2.7 and earlier contains a Prototype Pollution vulnerability in the admin API. A badly formed request can modify the prototype of the default JavaScript Object with the potential to affect the default behaviour of the Node-RED runtime. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.","published":"2021-02-26T17:15:12.210Z","modified":"2026-07-09T14:06:15.788583Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@node-red/runtime","fixedVersion":"1.2.8"}],"fix":null,"references":[{"type":"WEB","url":"https://www.npmjs.com/package/%40node-red/editor-api"},{"type":"WEB","url":"https://www.npmjs.com/package/%40node-red/runtime"},{"type":"ADVISORY","url":"https://github.com/node-red/node-red/releases/tag/1.2.8"},{"type":"ADVISORY","url":"https://github.com/node-red/node-red/security/advisories/GHSA-xp9c-82x8-7f67"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T14:06:15.788583Z"}}