alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-95813 e621ng - Open Redirect via Pagination Host Parameter"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"host="; nocase; content:"protocol="; nocase; pcre:"/[?&]host=[a-z0-9][a-z0-9.-]*\.[a-z]{2,}(?:&|$)/i"; classtype:web-application-attack; reference:cve,CVE-2026-95813; reference:url,https://www.exploit.observer/?keyword=CVE-2026-95813&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=e621ng&match=exact; sid:1079401; rev:1;)