ET WEB_SPECIFIC_APPS LMDeploy LLM Inference Engine Server-Side Request Forgery (CVE-2026-33626)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS LMDeploy LLM Inference Engine Server-Side Request Forgery (CVE-2026-33626)";
    flow:established,to_server;
    http.uri;
    content:"/v1/chat/completions"; fast_pattern;
    http.request_body;
    content:"|22|image_url|22 3a|";
    pcre:"/^\s*\x7b\s*\x22url\x22\x3a\s*\x22https?\x3a\x2f{2}/R";
    http.method;
    content:"POST";
    reference:url,www.sysdig.com/blog/cve-2026-33626-how-attackers-exploited-lmdeploy-llm-inference-engines-in-12-hours;
    reference:cve,2026-33626;
    classtype:web-application-attack;
    sid:2068972; rev:1;
    metadata:attack_target Server, tls_state TLSDecrypt, created_at 2026_04_24, cve CVE_2026_33626, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2026_04_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)