alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS MasaCMS m Tag Pre-Auth RCE via JSON API (CVE-2024-32641)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/index.cfm/_api/json/v1/default/?"; fast_pattern; pcre:"/^.*(?:%5[bB]|\x5b)m(?:%5[dD]|\x5d).*(?:%5[bB]|\x5b)\x2fm(?:%5[dD]|\x5d)/R"; reference:url,github.com/MasaCMS/MasaCMS/security/advisories/GHSA-cj9g-v5mq-qrjm; reference:cve,2024-32641; classtype:attempted-admin; sid:2065999; rev:1; metadata:affected_product MasaCMS, attack_target Web_Server, tls_state plaintext, created_at 2025_12_03, cve CVE_2024_32641, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_03, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)