alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS Rejetto HTTP File Server Unauthenticated Admin Cookie Request (CVE-2026-61500)"; flow:established,to_server; flowbits:set,ET.Rejetto.CVE-2026-61500; http.uri; content:"|2f 7e 2f|api|2f|loginSrp1"; fast_pattern; http.header_names; content:!"cookie|0d 0a|"; nocase; http.request_body; strip_whitespace; content:"|22|username|22 3a 22|admin|22|"; reference:url,github.com/aramosf/CVE-2026-61500/; reference:cve,2026-61500; classtype:attempted-admin; sid:2072393; rev:1; metadata:affected_product Rejetto, attack_target Server, tls_state TLSDecrypt, created_at 2026_10_08, cve CVE_2026_61500, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2026_10_08, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)