Security researchers Dor Attias and Ofek Itach demonstrate a critical CVSS 10.0 n8n vulnerability (CVE-2026-21858). Watch the full RCE exploit demo using type confusion to bypass authentication and read sensitive local files.
// Dor Attias SOCIAL //
LinkedIn: https://www.linkedin.com/in/dor-attias-740758155/
// Ofek Itach SOCIAL //
LinkedIn: https://www.linkedin.com/in/ofek-it/
// N8N Hack Blog
https://www.cyera.com/research-labs/ni8mare-unauthenticated-remote-code-execution-in-n8n-cve-2026-21858
// Cyera Blog //
https://www.cyera.com/blog
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0:00 - Coming up
0:56 - n8n vulnerability explained
02:33 - n8n hacking demo // How the vulnerability works
09:13 - How bad is it?
11:51 - Vulnerability summary
13:28 - More explained on Cyera blog // Webhooks
16:59 - Webhooks explained
18:09 - Formidable
19:18 - Formidable explained
20:01 - Handling uploaded files in n8n
22:32 - The form webhook node
24:28 - How to exploit
25:54 - Exploit summary
26:46 - How to mitigate
27:37 - How to become a security researcher
32:36 - Conclusion
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Disclaimer: This video is for educational purposes only.
#n8n #ni8mare #rce