Pinned
Our research team found a disk isolation bug in Cloudflare Containers, the platform underneath Cloudflare Sandboxes, that exposed other customers' files from inside a sandbox, including credential files and browser cookie stores.
Reported Sept 4, fixed fast, disclosed jointly
Security researchers at Accomplish identified a Cloudflare Containers vulnerability involving residual disk data. We've detailed the issue, investigation, and fix in our latest post. The vulnerability is fully remediated, and no customer data was compromised.
