This incident has been resolved.
A change made to how Cloudflare's Web Application Firewall parses requests caused Cloudflare's network to be unavailable for several minutes this morning. This was not an attack; the change was deployed by our team to help mitigate the industry-wide vulnerability disclosed this week in React Server Components.
More information can be found on our blog post: https://blog.cloudflare.com/5-december-2025-outage/
This incident has been resolved.
This incident is now resolved.
This incident has been resolved.
This incident has been resolved.
This incident has been resolved.
This incident is now resolved.
Cloudflare has observed and mitigated an availability issue which potentially impacted users in multiple locations that use 1.1.1.1 public resolver. The issue was observed December 2nd from 18:09 to 18:40 UTC, and 1.0.0.1 was not impacted.
This incident has been resolved.
This incident has been resolved.