alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-58499 EverOS - Path Traversal Arbitrary File Write via memory add sender_id Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/v1/memory/add"; nocase; fast_pattern; http.request_body; content:"sender_id"; nocase; pcre:"/\"sender_id\"\s*\x3a\s*\"[^\"]*(?:\x2e\x2e[\x2f\x5c]|%2e%2e)/i"; classtype:web-application-attack; reference:cve,CVE-2026-58499; reference:url,https://www.exploit.observer/?keyword=CVE-2026-58499&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=everos&match=exact; sid:1053001; rev:1;)