Description
IBM Langflow OSS 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 contains a Server-Side Request Forgery (SSRF) vulnerability in the validate_model_provider_key() function for the Ollama provider. The function accepts a user-supplied OLLAMA_BASE_URL parameter and passes it directly to requests.get() without validation, scheme/host allowlisting, or filtering of private IP ranges (loopback, RFC1918, link-local addresses).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| IBM | Langflow OSS | 1.0.0 – ≤ 1.10.3 | — |
Advisories 1
- WID-SEC-2026-2675 IBM Langflow Desktop: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 5, 2026
References
- https://www.ibm.com/support/pages/node/7282650 vendor-advisory patch