CVE-2026-46442
CVE-2026-46442 · Flowise: Authenticated Host RCE via POST /api/v1/node-custom-function and NodeVM Sandbox Escape
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Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, POST /api/v1/node-custom-function lacks route-level authorization, allowing any authenticated user or API key to submit arbitrary JavaScript to the Custom JS Function node. When E2B_APIKEY is not configured — the common deployment case — Flowise executes this code inside a NodeVM sandbox. This sandbox can be escaped, allowing an attacker to reach the host process object and execute system commands via child_process. The result is authenticated remote code execution on the Flowise server host. This issue has been patched in version 3.1.2.
CVSS 9.4 · Kritisch · EPSS 36,3% · Öffentlicher Exploit · Korrektur verfügbar
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Technologie-Stack: node