CVE-2026-41270: Flowise SSRF protection bypass in Custom Function feature

Summary

CVE-2026-41270 affects Flowise before 3.1.0. The Custom Function feature allows SSRF protection bypass because the built-in Node.js http, https, and net modules are permitted in the NodeVM sandbox without the HTTP_DENY_LIST checks that cover axios and node-fetch. Authenticated users can use these modules to reach internal network resources, such as cloud provider metadata services.

Mitigation

Fixed in 3.1.0.

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

• flowisenpmLLM dependency since 2024-03-12
• flowise-componentsnpmLLM dependency since 2023-04-10 · 1 tracked dependent

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