Description
IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol (MCP) composer endpoint when mcp_composer_enabled=true (default) and projects are configured with auth_type=oauth .
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| IBM | Langflow OSS | 1.0.0 – ≤ 1.10.3 | — |
Advisories 1
- WID-SEC-2026-2619 IBM Langflow Desktop: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 5, 2026
References
- https://www.ibm.com/support/pages/node/7282147 vendor-advisory patch