What’s Vulnerable › Vulnerabilities

CVE-2026-110844: n8n before 1.123.83 Credential Authorization Bypass via Nested Inline Sub-Workflows

• Severity: high (CVSS 7.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-15
• Weakness: CWE-863

Description

n8n before 1.123.83 contains an authorization bypass vulnerability that allows shared-workflow editors to use credentials they cannot access by embedding them in nested or tool inline sub-workflows. Attackers can save workflows with Workflow Tool or Workflow Retriever inline definitions referencing restricted credentials, which execute using the workflow owner's credential values.

Affected products

• n8n-io n8n: before 1.123.83 — fixed in 1.123.83

How to fix

Upgrade to a fixed version: n8n-io n8n 1.123.83. Check the vendor advisory for mitigations.

References

• https://github.com/n8n-io/n8n/security/advisories/GHSA-r6g9-5cpp-ppwr
• https://www.vulncheck.com/advisories/n8n-before-1.123.83-credential-authorization-bypass-via-nested-inline-sub-workflows

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