Risk Letters

Exploited vulnerability

CVE-2026-105740

TLP:CLEAR

Langflow Langflow Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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 immediate

Facts

  • Vendor: Langflow
  • Product: Langflow is
  • CVSS: 9.9
  • EPSS (probability of exploitation within 30 days): 1 %
  • First known exploitation: 12 October 2026
  • First seen by Risk Letters: 5 October 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD