I am still getting this (purged cache from CloudFlare).
[CODE]{
"id": "3484357ba845380a",
"country": "US",
"ip": "75.131.113.23",
"protocol": "HTTP/2",
"method": "POST",
"host": "www.christianforums.com",
"user_agent": "Mozilla/5.0 (Linux; Android 7.1.1; Pixel Build/NOF27B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Mobile Safari/537.36",
"uri": "/attachments/do-upload.json?hash=5cc7fa470b07cc17e5a48d6dff18c010&content_type=post",
"request_duration": 0,
"triggered_rule_ids": [
"100011"
],
"action": "block",
"cloudflare_location": "ATL",
"occurred_at": "2017-03-31T15:05:48.1Z",
"rule_detail": [
{
"id": "",
"description": "ARGS:UPLOAD"
}
],
"rule_message": "Request arguments containing NUL byte",
"type": "waf",
"rule_id": "100011",
"zone_id": "a4cf2ba1548dd21e9766a88865a21265",
"cookie": ""
}[/CODE]