#cve-2026-21858

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fromTechzine Global
1 week ago
Information security

'Ni8mare' vulnerability affects n8n platform with a score of 10.0

A Content-Type Confusion vulnerability in n8n (CVE-2026-21858, CVSS 10.0) enables full takeover of local instances; upgrade to version 1.121.0 or higher is required.
fromThe Hacker News
1 week ago
Information security

Critical n8n Vulnerability (CVSS 10.0) Allows Unauthenticated Attackers to Take Full Control

A maximum-severity n8n vulnerability (CVE-2026-21858, Ni8mare) enables unauthenticated attackers to extract secrets and fully compromise vulnerable instances.
Information security
fromThe Hacker News
3 days ago

Weekly Recap: AI Automation Exploits, Telecom Espionage, Prompt Poaching & More

Small security oversights in widely used tools enable attackers to execute remote code and scale compromises rapidly, exemplified by n8n CVE‑2026‑21858.
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