Cloudflare blames massive internet outage on ‘latent bug’

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Cloudflare headquartersImage Credits:mith Collection/Gado / Getty Images

7:32 AM PST · November 18, 2025

On Tuesday morning, a large chunk of the net went down oregon was not moving properly, including ChatGPT, Claude, Spotify, X, and much due to an outage astatine net infrastructure elephantine Cloudflare. 

Cloudflare said successful its presumption page astatine astir 8 americium ET it had identified the issues and was implementing a fix. Less than 2 hours later, Cloudflare said “a hole has been implemented and we judge the incidental is present resolved. We are continuing to show for errors to guarantee each services are backmost to normal.”

Around the aforesaid time, Cloudflare’s main exertion serviceman Dane Knecht explained that a latent bug was liable in an apologetic X post

“In short, a latent bug successful a work underpinning our bot mitigation capableness started to clang aft a regular configuration alteration we made. That cascaded into a wide degradation to our web and different services. This was not an attack,” Knecht wrote, referring to a bug that goes undetected successful investigating and has not caused a failure. 

Knecht besides said Cloudflare failed its customers and “the broader internet” with the outage, and promised that the institution is already moving to marque definite “it does not hap again.” 

“I cognize it caused existent symptom today,” Knecht added, promising a much in-depth breakdown of what happened “in a fewer hours.”

The institution has since noted connected its presumption leafage that immoderate customers whitethorn beryllium inactive experiencing issues logging into oregon utilizing the Cloudflare dashboard. Cloudflare said it’s moving connected a hole to resoluteness this, and continuing to show for immoderate further issues.

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Cloudflare’s monolithic outage came little than a period aft a akin outage astatine Amazon Web Services (AWS), and is different stark reminder that the full web depends connected conscionable a fistful of companies. If these giants acquisition an issue, the full of the net commencement to crumble. 

Lorenzo Franceschi-Bicchierai is simply a Senior Writer astatine TechCrunch, wherever helium covers hacking, cybersecurity, surveillance, and privacy.

You tin interaction oregon verify outreach from Lorenzo by emailing lorenzo@techcrunch.com, via encrypted connection astatine +1 917 257 1382 connected Signal, and @lorenzofb connected Keybase/Telegram.

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