CVE-2026-42867

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/knowledge_bases). 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 to create directories and write files anywhere on the server's filesystem. This vulnerability is fixed in 1.9.0.
Configurations

Configuration 1 (hide)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-23 17:16

Updated : 2026-06-26 17:09


NVD link : CVE-2026-42867

Mitre link : CVE-2026-42867

CVE.ORG link : CVE-2026-42867


JSON object : View

Products Affected

langflow

  • langflow
CWE
CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')