Langflow RCE Disaster: Unauthenticated Code Execution Exploit Exposed!
Langflow 1.2.x has a bit of a problem—it opens the door for remote code execution without even asking for ID. Thanks to a vulnerable endpoint, attackers can run arbitrary commands like they’re running their own errands. So, if you’re using Langflow, it’s time to lock the door before the wrong guests drop by!

Hot Take:
Looks like Langflow is flowing a little too freely, allowing anyone with a knack for Python to have a party on your server. This isn’t just a tiny leak; it’s more like a busted fire hydrant! Remember, folks, just because you can run arbitrary code doesn’t mean you should—unless you enjoy the thrill of living on the edge and possibly getting burned by your own curiosity. Patch up before your server becomes the new hangout spot for hackers!
Key Points:
- Langflow 1.2.x exposed to Remote Code Execution (RCE) due to improper code evaluation.
- Unauthenticated attackers can exploit the endpoint `/api/v1/validate/code`.
- Vulnerability lies in the use of Python’s `exec()` function.
- Tested on systems like Ubuntu and Docker.
- CVE identifier for this vulnerability is CVE-2025-3248.