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Critical Ni8mare Vulnerability in n8n Servers Exposes Thousands to Remote Code Execution
First seen 8 Jan 2026, 13:50 UTC
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A critical vulnerability, tracked as CVE-2026-21858, has been discovered in the n8n workflow automation platform, allowing unauthenticated attackers to execute arbitrary commands and potentially take over an estimated 100,000 servers worldwide. The flaw carries a maximum CVSS score of 10.0, and a proof-of-concept exploit has been released, putting numerous hosts at risk.
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