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Critical n8n Vulnerability: Update Now to Prevent RCE Attacks

Redhotcyber • January 7, 2026

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n8n issues critical security alert for RCE vulnerability . Update to version 1.121.3 now to prevent attacks. Learn more the CVE-2026-21877 ...

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical n8n RCE Vulnerability Requires Immediate Update n8n has issued a critical security alert regarding a remote code execution (RCE) vulnerability identified as CVE-2026-21877. Users are urged to update to version 1.121.3 to mitigate potential attacks. This vulnerability affects all users of the n8n platform. 5 sources 71

Extracted Entities

CVEs (1)