| Component | Langflow, Ollama |
| Severity | high (CVSS 7.1) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
| Published (NVD) | 2026-08-05 |
| Last modified | 2026-08-06 |
| Affected versions | langflow >= 1.0.0, < 1.11.0 |
| Fixed in | 1.11.0 |
| Weakness | CWE-918 |
| CISA KEV | not listed |
NVD 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).
What to do
- Upgrade Langflow to
1.11.0or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
Read more
- Langflow, n8n, LiteLLM: the AI builders on CISA KEV
- Ollama /api/pull CVEs, October 2026
- Inference server memory-safety CVEs
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