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Cloudflare Outage Briefly Knocks Major Sites Offline Worldwide

The company blamed a Web Application Firewall parsing change deployed to mitigate a React Server Components vulnerability.

Overview

  • Cloudflare said services were restored after roughly 24 minutes, with a fix deployed and monitoring underway, according to its status page.
  • The disruption was not a cyberattack, with Cloudflare attributing it to a change in how its firewall parses requests tied to the React Server Components issue.
  • Symptoms included blank pages and 5xx errors, failed Dashboard and API requests, and increased errors for Workers scripts alongside empty results from the Workers KV list API.
  • Platforms affected included LinkedIn, Zoom, Canva and Shopify, and even Downdetector was briefly down before logging thousands of Cloudflare-related reports.
  • Trading platforms such as Zerodha and Groww reported restored access, and the second outage in weeks intensified scrutiny of dependence on a few infrastructure providers.