CVE-2026-71279 | BDVDB-2026-355667 Detail

Description#

Zigbee2MQTT's ExternalJSExtension.getFilePath (lib/extension/externalJS.ts) joins a parameter received via an MQTT message (topic zigbee2mqtt/bridge/request/extension/save) into the extensions base path using path.join(basePath, name) with no sanitization. The extension handler only validates that the name ends in .js/.mjs/.cjs, writes the file, and then dynamically imports it via Node.js import, achieving remote code execution.

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Exploit#

History#

1. Version 12026-08-05Record published in the CVE List.
2. Version 22026-08-10Most recent update recorded in the CVE List.