CVE-2021-21297

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.

• CWE-915
• CWE-1321
• CWE-1321

• https://github.com/node-red/node-red/releases/tag/1.2.8Release Notes, Third Party Advisory
• https://github.com/node-red/node-red/security/advisories/GHSA-xp9c-82x8-7f67Third Party Advisory
• https://www.npmjs.com/package/%40node-red/editor-api
• https://www.npmjs.com/package/%40node-red/runtime
• https://github.com/node-red/node-red/releases/tag/1.2.8Release Notes, Third Party Advisory
• https://github.com/node-red/node-red/security/advisories/GHSA-xp9c-82x8-7f67Third Party Advisory
• https://www.npmjs.com/package/%40node-red/editor-api
• https://www.npmjs.com/package/%40node-red/runtime

Published

Feb 26, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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