Medium · published September 9, 2026
n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the OpenAI Chat Model node enforced credential allowed-domain restrictions for normal calls but not for the model-search dropdown. A workflow editor could set options.baseURL to an arbitrary host and make the searchModels path send the openAiApi credential there. The affected implementation is packages/@n8n/nodes-langchain/nodes/llms/LMChatOpenAi/methods/loadModels.ts, which omitted assertOpenAiCredentialAllowsUrl. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.
| Product | Versions | Fixed in |
|---|---|---|
| n8n/n8n | < 1.123.76 | 1.123.76 |
| n8n/n8n | ≥ 2.0.0, < 2.37.7 | 2.37.7 |
| n8n/n8n | ≥ 2.38.0, < 2.38.2 | 2.38.2 |