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CVE-2026-41270: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.…

Occurred
Apr 23, 2026
Published
Apr 23, 2026
Source
NVD CVE

Summary

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Server-Side Request Forgery (SSRF) protection bypass vulnerability exists in the Custom Function feature. While the application implements SSRF protection via HTTP_DENY_LIST for axios and node-fetch libraries, the built-in Node.js http, https, and net modules are allowed in the NodeVM sandbox without equivalent protection. This allows authenticated users to bypass SSRF controls and access internal network resources (e.g., cloud provider metadata services) This vulnerability is fixed in 3.1.0.

Tags

  • CVE
  • CVE-2026-41270
  • cvss:HIGH

Classification

Category confidence: 90%
Severity confidence: 85%

Rationale: Vulnerability in LLM workflow tool Flowise allows SSRF bypass, enabling unauthorized internal network access.

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

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