alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS Apache Tika XML External Entity Injection (CVE-2025-54988)"; flow:established,to_server; http.uri; content:"/tika"; http.content_type; content:"application/pdf"; http.header; to_lowercase; content:"x-tika-pdfextractinlineimages|3a 20|true"; fast_pattern; content:"x-tika-pdfextractmarkedcontent|3a 20|true"; http.request_body; content:"|3c 21|ENTITY"; content:"SYSTEM"; distance:0; http.method; content:"PUT"; reference:url,github.com/projectdiscovery/nuclei-templates/; reference:cve,2025-54988; classtype:web-application-attack; sid:2071683; rev:1; metadata:affected_product Apache_Tika, attack_target Server, tls_state TLSDecrypt, created_at 2026_08_21, cve CVE_2025_54988, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2026_08_21, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)