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WAF fields

The Web Application Firewall (WAF) contains rules managed by Cloudflare to block requests that contain malicious content.

​​ WAF Action

0UnknownTake no other action.
1AllowBypass all subsequent WAF rules.
2DropBlock with an HTTP 403 response.
3Challenge AllowIssue a Managed Challenge.
4Challenge DropUnused.
5LogTake no action other than logging the event.

​​ Deprecated fields for internal Cloudflare use

The values of these fields are subject to change by Cloudflare at any time and are irrelevant for customer data analysis:

  • WAFFlags
  • WAFMatchedVar