Increase in 502 HTTP error rate for a subset of customers using Challenge Platform

Dec 20, 18:43 UTC
Resolved - This incident has been resolved.

Dec 20, 16:58 UTC
Investigating - Cloudflare is investigating an increased level of HTTP 502 errors on a subset of customers' zones that are actively using Challenge Platform.

We are working to analyse and mitigate this problem. More updates to follow shortly.