alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-55239 Tianji - Timezone SQL Injection"; flow:established,to_server; http.header; content:"timezone"; nocase; fast_pattern; pcre:"/timezone[^\r\n]*(?:'|%27)[^\r\n]*(?:select|union|sleep|pg_sleep|insert|update|delete)/i"; classtype:web-application-attack; reference:cve,CVE-2026-55239; reference:url,https://www.exploit.observer/?keyword=CVE-2026-55239&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=tianji&match=exact; sid:1084400; rev:1;)