Why is part of the global web inaccessible?

Jane Anderson
Jane Anderson
Why is part of the global web inaccessible?

An outage has hit the global internet since midday, affecting Doctissimo, Marmiton, Cnews and ChatGPT. This Tuesday, November 18, 2025, many sites are simply inaccessible, in question: Cloudflare. But what is the origin of the problem?

At lunchtime, you would have liked to prepare a good dish, but you cannot access the Marmiton website. For what ? The fault lies with the IT services giant Cloudflare. This Tuesday, November 18, an unexpected bug made many sites inaccessible.

Cloudflare informs us on its status page:

Update – We continue to work to restore service for application services customers.
18 November 2025 – 13:58 UTC
(Cloudflare)

(3:15 p.m.) No update since 1:58 p.m.

Why is Cloudflare buggy?

Cloudflare says there has been an unusual traffic spike to one of its services. This “too much” traffic caused errors (“elevated error rates”) in part of its network. They say they don’t yet know where exactly this increase in traffic is coming from.

Maintenance in progress

There were planned maintenance operations in several data centers (data centers) at the same time, including Los Angeles, Santiago, etc.

Why a Cloudflare outage can impact many sites

Many websites (media, platforms, apps) use Cloudflare to be faster, more secure, or resist attacks. If Cloudflare “bugs”, it could affect all the sites that use its services. She informs us on her site, answer “ to the internet needs of millions of websites and processes an average of 81 million HTTP requests per second“.

List of affected sites

  • Doctisimo
  • X
  • Decathlon
  • scullion
  • Canvas
  • ChatGPT
  • Facebook
  • Spotify
  • Cnews
  • Uber
  • League of Legends

The sequel to come