CVE-2026-42867 Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without...

PT-2026-50141

Name of the Vulnerable Software and Affected Versions Langflow versions prior to 1.9.0 Description Langflow contains a path traversal flaw in the Knowledge Bases API endpoint 'POST /api/v1/knowledge bases'. The issue resides in the create knowledge base function, where the name variable is used t...