CVE-2026-103247

High

Description

n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard. Attackers with editor access to shared workflows can exploit mismatched node ID and name matching to retain victim credentials and redirect secrets to attacker-controlled hosts.

SeverityHigh

CVSS8.5

Exploit probability—

ProductN8n

PublishedOct 1, 2026

First seenOct 1, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

n8n-io n8n1.123.80 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-7gjv-rcf8-x5qc

Affected products

Product	Affected versions	Fixed in
n8n-io n8n	v < 1.123.80	1.123.80

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