IBM Langflow OSS 1.0.0 through 1.10.3 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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://www.ibm.com/support/pages/node/7282647 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.4 · langflowNVD modified 2026-10-23 21:10
Affected (CPE criteria) 1
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
References 1
- https://www.ibm.com/support/pages/node/7282647 Vendor Advisory