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CVE-2026-119978

Flowise through 3.1.4 Custom Function Sandbox Escape RCE via LocalFileStore

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
On X
View the cve.now post

Summary

Flowise, an open-source platform for building AI workflows, is affected through version 3.1.4. An authenticated user can exploit its custom function sandbox to run arbitrary operating system commands on the server with the Flowise process's privileges, potentially giving full control over the host.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

Flowise through 3.1.4 contains a sandbox escape vulnerability that allows authenticated users to execute OS commands by abusing allowlisted langchain and mammoth modules when ALLOW_BUILTIN_DEP=true. Attackers can submit JavaScript to /api/v1/node-custom-function that writes a file into the mammoth package via LocalFileStore and requires it, escaping vm2 as the Flowise process user.

Timeline

  1. CVE published
  2. First seen by cve.now
  3. Posted on X by cve.now

Affected versions

  • FlowiseAI Flowise

    through 3.1.4

References 5

GitHub · FlowiseAI/Flowise

GitHub Advisory Database

vulncheck.com