alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-34206 Captcha Protect - Reflected XSS via destination Parameter"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/challenge"; nocase; fast_pattern; content:"destination="; nocase; pcre:"/[?&]destination=[^&]*(?:(?:%3c|<)\s*(?:svg|script|img|iframe|body|details)|on(?:load|error|click|mouseover|focus)\s*(?:%3d|=))/i"; classtype:web-application-attack; reference:cve,CVE-2026-34206; reference:url,https://www.exploit.observer/?keyword=CVE-2026-34206&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=captcha-protect&match=exact; sid:1098400; rev:1;)