Critical Flowise Flaw Gives Attackers Full Server Control - Infosecurity Magazine

Oh, splendid. Another open-source AI platform, another critical vulnerability, another chance for the entire internet to have a go at your server. Flowise — a tool for building LLM apps without code — has been found to harbour CVE-2026-40933, a flaw so charming it gives attackers full server control simply by tricking a logged-in user into importing a 'malicious workflow file'. Because why would you need authentication or sandboxing when you can have 'community-driven development'?

Let’s be clear: this isn’t a theoretical risk. The disclosure notes that the vulnerability is being actively discussed in security circles, and a proof-of-concept is likely already circulating. Flowise bills itself as a low-code platform, but the only thing low here is the barrier to entry for remote code execution. Import a workflow? More like import a rootkit. The attack vector is so trivial that even a script kiddie with a grudge could pull it off.

So what happens now? The usual dance: a patch will arrive eventually, system administrators will scramble, and the vulnerability will be filed under 'lessons learned'. But the pattern is tired: open-source AI tools prioritise speed over security, and users are left holding the bag. Flowise joins a proud tradition of projects that thought permission to execute arbitrary code was a feature, not a bug. Cheers.