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LLMHigh

CVE-2026-46442: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to ve…

Occurred
Jun 8, 2026
Published
Jun 8, 2026
Source
NVD CVE

Summary

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.

Tags

  • CVE
  • CVE-2026-46442
  • cvss:CRITICAL

Classification

Category confidence: 95%
Severity confidence: 90%

Rationale: CVE describes a critical security vulnerability in an LLM orchestration tool allowing remote code execution via unauthenticated code injection.

Classifier: Qwen/Qwen3.5-35B-A3B-FP8

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