ET WEB_SPECIFIC_APPS Apache Tika XML External Entity Injection (CVE-2025-54988)

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;
    content:"x-tika-pdfextractinlineimages|3a 20|true"; fast_pattern; nocase;
    content:"x-tika-pdfextractmarkedcontent|3a 20|true"; nocase;
    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;
)