cvedb.io
CVE-2026-42867
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2026-06-23T17:16:58.857 · Last modified 2026-06-26T17:09:16.030

Summary

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.

Affected products

langflow — langflow

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.