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OpenAdvisories
High · 7.1 CVE-2026-86082 EUVD-2026-74274GHSA-34ff-336r-5q23

n8n: Domain-Restriction Bypass via Unguarded Model-Search Endpoint in OpenAI Chat Model Node

Published Sep 8, 2026 · Updated Sep 14, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
n8n-io n8n >= 2.38.0, < 2.38.2, >= 2.0.0, < 2.37.7, < 1.123.76 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm n8n < 1.123.76 1.123.76 GHSA-34ff-336r-5q23
npm n8n >= 2.38.0, < 2.38.2 2.38.2 GHSA-34ff-336r-5q23
npm n8n >= 2.0.0, < 2.37.7 2.37.7 GHSA-34ff-336r-5q23

Advisories 1

References