ET EXPLOIT CyberArk Enterprise Password Vault XXE Injection Attempt

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT CyberArk Enterprise Password Vault XXE Injection Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/PasswordVault/auth/saml/"; fast_pattern; endswith;
    http.request_body;
    content:"SAMLResponse=PCFET0NUWVBFIHIgWwo8IUVMRU1F"; depth:41;
    reference:url,www.exploit-db.com/exploits/46828;
    classtype:attempted-admin;
    sid:2027358; rev:4;
    metadata:created_at 2019_05_16, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2020_09_17;
)