alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SERVER Next.js Middleware Authorization Bypass (CVE-2025-29927)"; flow:established,to_server; http.header; content:"x-middleware-subrequest|3a 20|"; nocase; reference:url,projectdiscovery.io/blog/nextjs-middleware-authorization-bypass; reference:cve,2025-29927; classtype:web-application-attack; sid:2061026; rev:1; metadata:attack_target Server, created_at 2025_03_24, cve CVE_2025_29927, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2025_03_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)