alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Flowise chatflows id Parameter Directory Traversal Attempt (CVE-2025-71334)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/v1/chatflows"; fast_pattern; http.header; content:"x-request-from|3a 20|"; nocase; http.request_body; content:"|22|id|22|"; pcre:"/^[^\x2c\x7d]*?(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/R"; reference:url,github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849; reference:cve,2025-71334; classtype:attempted-admin; sid:2071367; rev:2; metadata:affected_product Flowise, attack_target Web_Server, tls_state plaintext, created_at 2026_08_03, cve CVE_2025_71334, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_08_04, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)