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errorWordfence•error403securityfirewallcloudcloudflareinfoWordfenceinfolive-traffic•star_halfUncommon•warningModerate

Wordfence live traffic blocked: Cloudflare challenge page returned

Wordfence logs a block when it receives a non‑200 response from the server. Cloudflare serves a JavaScript or CAPTCHA challenge before the request reaches WordPress, so Wordfence records the challenge page as a blocked entry.

The plugin treats any 403 or 503 response as a block, therefore the Live Traffic view displays “Blocked – Cloudflare challenge page returned”. The site continues to load for visitors because the challenge is resolved by the browser, but the log entry remains.

Symptoms

[dashicons-warning]
Blocked entry in Live Traffic
Live Traffic shows “Blocked – Cloudflare challenge page returned” for many requests.
[dashicons-admin-tools]
Scan failures
Wordfence scans stop or report errors.
[dashicons-email]
Email alerts
Wordfence sends alerts about high block volume.
[dashicons-visibility]
No front‑end impact
Visitors see the site normally.

Common Causes

Cloudflare challenge intercepts request
Cloudflare serves a JS or CAPTCHA page before the request reaches WordPress, Wordfence receives a 403/503 response.
Missing CF‑Connecting‑IP header
Wordfence cannot read the real visitor IP, treats the edge IP as suspicious.
Firewall or rate‑limit rules challenge same traffic
Cloudflare rules target the same IP range or user‑agent that Wordfence monitors, resulting in a double block.
Incorrect trusted proxies list
Wordfence thinks the request originates from a Cloudflare edge address, flags it as malicious.
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