Versions (2)
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Rev: 1 • Dec 9, 2025, 12:00 PMET HUNTING Javascript Prototype Pollution Attempt via __proto__ in HTTP Body
alert http any any -> $HOME_NET any (msg:"ET HUNTING Javascript Prototype Pollution Attempt via __proto__ in HTTP Body"; flow:established,to_server; http.request_body; content:"__proto__"; pcre:"/[\x22\x27\x3a\x5b\x2e\x3f\x23\x26]__proto__(?:[\x2e\x3a\x5b\x5d]|\x5c?[\x22\x27]|\x25(?:2[eE]|3[aA]|5[bBdD]))/"; reference:url,portswigger.net/web-security/prototype-pollution; classtype:web-application-activity; sid:2066197; rev:1; metadata:attack_target Server, tls_state TLSDecrypt, created_at 2025_12_09, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_09; target:dest_ip;)
Dec 9, 2025, 12:00 PM
Dec 9, 2025, 12:00 PM
Dec 9, 2025, 10:34 PM
Dec 10, 2025, 11:34 PM
rules/emerging-hunting.rules