Cloudflare’s React2Shell Oopsie: When Fixing Vulnerabilities Breaks the Internet

Cloudflare’s attempt to patch the React2Shell vulnerability resulted in a Friday fiasco, causing brief chaos across major internet services. While the fix was swift, the unintended outage left Zoom, LinkedIn, and others in a temporary lurch. This marks Cloudflare’s second hiccup in under a month, proving even the cloud has cloudy days.

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Published: December 5, 2025 3:14 pmAdded: December 5, 2025 at 7:47 amAssembled by: The Editor
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Hot Take:

Cloudflare’s valiant efforts to protect us from the dastardly React2Shell vulnerability ended up being a classic case of “the cure is worse than the disease.” It’s as if they tried to patch a leaky boat by drilling more holes!

Key Points:

  • React2Shell, or CVE-2025-55182, is a critical unauthenticated remote code execution vulnerability in the React framework.
  • Cloudflare, Google Cloud, and AWS were quick to respond to the vulnerability.
  • Cloudflare’s WAF mitigations inadvertently caused outages for major internet services.
  • The company rolled out a fix within half an hour of identifying the issue.
  • This is Cloudflare’s second significant outage in less than a month.

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