alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS IBM Langflow Auto-Login Bypass (CVE-2026-9198)"; flow:established,to_server; http.uri; content:"/api/v1/auto_login"; fast_pattern; http.header_names; to_lowercase; content:!"authorization|0d 0a|"; reference:url,github.com/advisories/GHSA-5wm9-vgmg-cjv6; reference:cve,2026-9198; classtype:attempted-user; sid:2071355; rev:1; metadata:affected_product Langflow, attack_target Server, tls_state TLSDecrypt, created_at 2026_07_31, cve CVE_2026_9198, deployment Perimeter, deployment Internal, 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;)