16 October 2026
Reference: CVE-2026-105740
1. What is being reported?
The report describes a critical vulnerability in Langflow versions before 1.9.0. If someone is logged into Langflow, they can add a specially crafted server setting that runs dangerous commands on the server without any checks. This can let them take control of the system or cause it to behave badly.
2. What this means in plain English
For a small organisation, this means that if you use Langflow and allow multiple users to access it, a user with bad intentions could exploit this flaw to harm your systems or steal information. Even trusted users could accidentally or deliberately cause damage if this vulnerability is present.
3. Could this affect a small business?
Small businesses or charities using Langflow before version 1.9.0 could be affected, especially if multiple people have access to the software. If you do not use Langflow or only have a single trusted user, the risk is much lower.
4. What to do now
- Check if your organisation uses Langflow software.
- If yes, verify the version and update to version 1.9.0 or later immediately.
- Limit access to Langflow to trusted users only until the update is applied.
- Ask your IT provider to review your Langflow setup for any signs of misuse.
5. Ask your IT provider
Can you confirm if our Langflow software is updated to version 1.9.0 or later to protect against the recent critical remote code execution vulnerability?
6. Bottom line
If you use Langflow, update it now to stop attackers from taking control of your system.
Information based on CISA KEV, NVD and reputable security reporting.