alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS Proxmox VE 7.x Authentication Bypass (PSA-2026-00043-1)"; flow:established,to_server; http.uri; content:"/api2/"; http.request_body; content:"username|3d|root@pam"; content:"password|3d|root@pam"; fast_pattern; http.method; content:"POST"; reference:url,gist.github.com/nebusecurity/65fe90dd673d395b7926278d7eaf5849; classtype:attempted-admin; sid:2071872; rev:1; metadata:affected_product Proxmox, attack_target Server, tls_state TLSDecrypt, created_at 2026_09_01, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2026_09_01, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)