CVE-2026-7869
Medium
Description
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Langflow
PublishedAug 5, 2026
First seenAug 5, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- langflow langflow1.11.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| langflow langflow | 1.0.0 ≤ v < 1.11.0 | 1.11.0 |
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