Is CVE-2026-103247 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-103247?

CVE-2026-103247 has a CVSS v3 severity of HIGH (8.5).

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CVE-2026-103247

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.