CVE-2026-21877

CVSS 10.0 Alert: Critical n8n Flaw CVE-2026-21877 Grants Total Control

n8n Node RCE Vulnerabilities CVE-2026-44791 Prototype Pollution n8n RCE Vulnerabilities CVE-2026-27497 CVE-2026-25053 n8n RCE Vulnerability CVE-2026-21877 n8n RCE, CVE-2025-68613 n8n Git RCE, core.hooksPath Exploit

CVSS 10.0 Alert: Critical n8n Flaw CVE-2026-21877 Grants Total Control

Do Son January 7, 2026

Urgent: n8n CVE-2026-21877 (CVSS 10.0) allows full server compromise via Git node. Update to v1.121.3 now to prevent RCE and arbitrary file writes.

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