CVE-2026-72774: n8n before 1.123.67 Authentication Bypass via HTTP Request Node

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-11 · updated 2026-10-29
Weakness: CWE-639

Description

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a credential authorization bypass in the HTTP Request node. An authenticated member with edit access to a shared workflow can reference another user's credential while specifying the credential type via an expression. Because the pre-execution permission check compares the unresolved expression instead of the resolved credential type, the ownership check is skipped and the credential is loaded at execution time, allowing the member to use or exfiltrate a credential they were not granted. Exploitation requires knowing the target credential's identifier.

Affected products

n8n-io n8n: before 1.123.67; from 2.0.0 before 2.31.5; 2.32.0 (and their updates) — fixed in 1.123.67, 2.31.5
n8n-io n8n: before 1.123.67 — fixed in 1.123.67

How to fix

Upgrade to a fixed version: n8n-io n8n 1.123.67, 2.31.5; n8n-io n8n 1.123.67. Check the vendor advisory for mitigations.

References

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