Ni8mare flaw gives unauthenticated control of n8n instances
A critical n8n flaw (CVE-2026-21858, CVSS 10.0), dubbed Ni8mare, allows unauthenticated attackers to fully take over vulnerable instances. Researchers uncovered a maximum severity n8n vulnerability, tracked as CVE-2026-21858 (CVSS score of 10.0). The flaw, du…
Ni8mare flaw gives unauthenticated control of n8n instances Researchers uncovered a maximum severity n8n vulnerability, tracked as CVE-2026-21858 (CVSS score of 10.0). The flaw, dubbed Ni8mare by Cy… [+3769 chars]