alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS Flowise Authenticated Remote Code Execution (CVE-2026-46442)"; flow:established,to_server; http.uri; content:"/api/v1/node-custom-function"; fast_pattern; http.request_body; strip_whitespace; content:"child_process"; content:"|2e|execSync|28|"; http.method; content:"POST"; reference:url,github.com/FlowiseAI/Flowise/security/advisories/GHSA-9rvc-vf7m-pgm2; reference:cve,2026-46442; classtype:web-application-attack; sid:2071351; rev:1; metadata:affected_product Flowise, attack_target Server, tls_state TLSDecrypt, created_at 2026_07_31, cve CVE_2026_46442, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2026_07_31, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)