On December 5, 2025, Cloudflare experienced a significant outage lasting about 25 minutes due to a configuration change related to their Web Application Firewall. The issue arose from a bug triggered when turning off a testing tool, resulting in HTTP 500 errors for around 28% of customer traffic. Cloudflare is implementing measures to prevent similar incidents in the future.

Cloudflare faced a global outage due to a database permission update that caused 5xx errors across its services. The issue stemmed from a regression that led to duplicate data in the Bot Management system, overwhelming memory limits and crashing the service. Cloudflare has since restored service and is reviewing its systems to prevent similar issues.