Security Bulletin: Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

Summary Langflow provides a visual interface for constructing and executing AI-powered agent workflows, exposing HTTP API endpoints for flow execution, file management, vector store operations, and Model Context Protocol MCP server configuration. An attacker could exploit insufficient validation...

PT-2026-53958

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.9.6 Description A missing authentication flaw exists in the /api/v1/build public tmp/ endpoints. This allows an unauthenticated attacker to use a valid job identifier to read build event data or cancel...