ET WEB_SPECIFIC_APPS Dockwatch compose.php composePath Parameter Command Injection Attempt (CVE-2026-58455)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Dockwatch compose.php composePath Parameter Command Injection Attempt (CVE-2026-58455)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/ajax/compose.php";
    http.request_body;
    content:"m|3d|composePull"; fast_pattern;
    content:"composePath|3d|";
    pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R";
    reference:url,github.com/projectdiscovery/nuclei-templates/blob/e9f0fe7fa4f5c548bbd1a4d3b65d0f181021e664/http/cves/2026/CVE-2026-58455.yaml;
    reference:cve,2026-58455;
    classtype:attempted-admin;
    sid:2071370; rev:1;
    metadata:affected_product Dockwatch, attack_target Web_Server, tls_state plaintext, created_at 2026_08_04, cve CVE_2026_58455, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_08_04, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)