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N8n (< 2.18.1)

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critical advisory

Critical Prototype Pollution Vulnerabilities in n8n Lead to Remote Code Execution

Critical Prototype Pollution vulnerabilities (CVE-2026-42231 and CVE-2026-42232) in n8n versions prior to 1.123.32, 2.17.4, and 2.18.1 can be exploited by authenticated users with workflow editing rights to achieve Remote Code Execution (RCE) on the n8n host.

n8n +2 prototype-pollution rce
2r 1t 2c