Core Insights - Cloudflare experienced a network outage due to a change in its Web Application Firewall, which caused service disruptions for several minutes on December 5 [3][2] - The incident was not a result of a cyber attack but was related to a fix for a recently disclosed vulnerability in React Server Components [3] - The outage affected numerous high-profile websites, including those of banks, Shopify, Zoom, and government entities in Norway and Sweden [4][5] Incident Details - Cloudflare first reported service issues at 08:56 UTC, indicating problems with the Cloudflare Dashboard and related APIs [2] - A fix was implemented by 09:12 UTC, and the incident was declared resolved by 09:20 UTC [2] - During the outage, reports of issues peaked at approximately 2,000 according to Downdetector [5] Impact on Clients - The outage impacted major clients such as Coinbase, Substack, HSBC, and Deliveroo, highlighting Cloudflare's significant role in managing and securing web traffic for 20% of the internet [5] - Previous outages, including one on November 18, had also affected high-profile services like ChatGPT and social platform X, raising concerns about reliability [6]