EUVD-2026-90750

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification...

CVE-2026-103246

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification...

PT-2026-103779

Name of the Vulnerable Software and Affected Versions n8n versions prior to 2.39.6 n8n versions 2.40.0 through 2.40.0 Description Insufficient validation of credential ownership occurs during inline agent node-tool introspection. This allows attackers to reference arbitrary credential IDs to...

CVE-2026-103246: Authorization Bypass Through User-Controlled Key

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification...