Information security
fromTechRepublic
1 week agoNew Phishing Attack Turns n8n Into On-Demand Malware Machine
Attackers are exploiting n8n workflows to deliver malware while evading detection and blending into normal business activities.
The vulnerabilities, collectively tracked as CVE-2026-25049, stem from weaknesses in how n8n sanitizes expressions inside workflows and could enable authenticated users to smuggle malicious code past safeguards introduced to fix CVE-2025-68613, a December 2025 vulnerability that already carried a near-perfect severity score. The new flaws carry a CVSS rating of 9.4, though some researchers argue the real-world impact could be even worse.
Multiple critical vulnerabilities in the popular n8n open-source workflow automation platform allow escaping the confines of the environment and taking complete control of the host server. Collectively tracked as CVE-2026-25049, the issues can be exploited by any authenticated user who can create or edit workflows on the platform to perform unrestricted remote code execution on the n8n server. Researchers at several cybersecurity companies reported the problems, which stem from n8n's sanitization mechanism and bypass the patch for CVE-2025-68613, another critical flaw addressed on December 20.
The vulnerability arises from a so-called "Content-Type Confusion" in n8n's webhook processing. Webhooks are the starting point for workflows and capture incoming data from forms, chat messages, and WhatsApp notifications. By manipulating the Content-Type header, an attacker can overwrite the req.body.files variable and thus read arbitrary files from the system. The researchers demonstrated how the vulnerability can escalate to Remote Code Execution.
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