alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Apache Struts2 XWork Component XML External Entity (XXE) injection (CVE-2025-68493)"; flow:established,to_server; http.uri; content:"/struts2-"; startswith; http.content_type; content:"application/xml"; http.request_body; content:"<?xml"; content:"|3c 21|ENTITY|20|"; fast_pattern; content:"SYSTEM"; distance:0; reference:url,www.gopher.security/news/critical-apache-struts-xxe-injection-vulnerability-cve-2025-68493; reference:cve,2025-68493; classtype:web-application-attack; sid:2066771; rev:1; metadata:affected_product Apache_Struts2, attack_target Server, tls_state TLSDecrypt, created_at 2026_01_15, cve CVE_2025_68493, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2026_01_15, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)