PYSEC-2026-377 Langflow Knowledge Bases API is Vulnerable to Path Traversal

Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API DELETE /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit thi...

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...

Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

Summary 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 proper sanitization or containment checks. An authenticated attacker can exploit this flaw...