Buried in this nicely-detailed RCA is a pretty damning fact:
Cloudflare left .unwrap() in mission-critical Rust code.
For non-Rustaceans, .unwrap() handles a type called Result that can either be Ok with a value, or an Err with an Error. The whole point is to gracefully handle errors and not let panics make it to production code.
I use .unwrap() sometimes! Usually when there's a logical guarantee that the result can never be an error. But I make sure to purge it from critical processes for exactly this reason.
blog.cloudflare.com/18-novembe…
Cloudflare outage on November 18, 2025
Cloudflare suffered a service outage on November 18, 2025. The outage was triggered by a bug in generation logic for a Bot Management feature file causing many Cloudflare services to be affected.The Cloudflare Blog
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