CVE-2026-105740
Langflow is a tool for building and deploying AI-powered agents and workflows
- Risk score
- 69/100
- CVSS
- 9.9 v3.1
- Exploit chance (30 days)
- 0.6%
- Published
- 5 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, any authenticated Langflow user can achieve Remote Code Execution (RCE) on the server by adding an MCP server with the "Stdio" transport. The user-supplied command field is passed directly to bash -c "exec {command}" with ze…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.9.0 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.9 critical
References
- https://github.com/langflow-ai/langflow/commit/efbc4a16e639409d938a4883463d27ef0bc637a0
- https://github.com/langflow-ai/langflow/pull/12290
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-7w94-79vh-5mr2
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-w794-rj3p-xv45
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-7w94-79vh-5mr2
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-w794-rj3p-xv45
Original description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, any authenticated Langflow user can achieve Remote Code Execution (RCE) on the server by adding an MCP server with the "Stdio" transport. The user-supplied command field is passed directly to bash -c "exec {command}" with zero validation, no allowlisting, and no sandboxing. The command executes immediately when the server list is fetched. Additionally, the env field allows arbitrary environment variable injection (e.g., LD_PRELOAD, PATH override). This vulnerability is fixed in 1.9.0.
Last activity 5 Oct 2026. Patch Forecast updates every hour.