alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS React Server Components React2Shell Unsafe Flight Protocol Property Access (CVE-2025-55182)"; flow:established,to_server; http.header; content:"next-action|3a 20|"; fast_pattern; nocase; http.content_type; content:"multipart/form-data|3b|"; http.request_body; content:"|24 40|"; pcre:"/^[0-9a-fA-F]+\x22?[\x0d\x0a]+/R"; content:"|22|_prefix|22|"; content:"|22|_formData|22|"; content:"|22 24|"; pcre:"/^[0-9a-fA-F]+\x3a(?:__proto__|constructor|Module)\x3a/R"; http.method; content:"POST"; reference:url,react2shell.com/; reference:cve,2025-55182; classtype:web-application-attack; sid:2066027; rev:4; metadata:affected_product Next_js, affected_product React, attack_target Server, tls_state TLSDecrypt, created_at 2025_12_04, cve CVE_2025_55182, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Exploit, updated_at 2026_04_30, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)