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Outage in Cloudflare

Intermittent 520s for Authenticated Origin Pulls

Resolved Minor
August 16, 2025 - Started 8 months ago - Lasted about 11 hours
Official incident page

Incident Report

Cloudflare is aware of and investigating reports of customers intermittently seeing 520s when using Authenticated Origin Pulls. We are working to analyze and mitigate this problem. More updates to follow shortly.

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Latest Updates ( sorted recent to last )
MONITORING 8 months ago - at 08/17/2025 10:28AM

A fix has been implemented and we are monitoring the results.

IDENTIFIED 8 months ago - at 08/17/2025 12:47AM

The issue has been identified and a fix is being implemented.

INVESTIGATING 8 months ago - at 08/16/2025 11:42PM

Cloudflare is aware of and investigating reports of customers intermittently seeing 520s when using Authenticated Origin Pulls. We are working to analyze and mitigate this problem. More updates to follow shortly.

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