alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET HUNTING Apache Airflow Experimental API Authentication Bypass Attempt (CVE-2020-13927)"; flow:established,to_server; http.method; content:"GET"; http.uri; bsize:>18; content:"/api/experimental/"; fast_pattern; reference:cve,2020-13927; classtype:attempted-admin; sid:2035037; rev:3; metadata:attack_target Web_Server, tls_state TLSDecrypt, created_at 2022_02_01, cve CVE_2020_13927, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_11_04, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)