Intelligence online17 sources monitored14 actively exploited 7d21 published 24hChecked recently
Vulnerability record

CVE-2026-105740

CriticalNo known exploitation

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations, limit exposure of affected systems, and watch this record for a patch.

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.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdate

    CVE-2026-105740 scored CVSS 9.9

    Basis: NIST National Vulnerability Database

Coverage

We have not published a story about this vulnerability yet.

References

  • github.com https://github.com/langflow-ai/langflow/commit/efbc4a16e639409d938a4883463d27ef0bc637a0
  • github.com https://github.com/langflow-ai/langflow/pull/12290
  • github.com https://github.com/langflow-ai/langflow/security/advisories/GHSA-7w94-79vh-5mr2
  • github.com https://github.com/langflow-ai/langflow/security/advisories/GHSA-w794-rj3p-xv45