Cloudflare fixed a cross-tenant Containers vulnerability that allowed residual data from other customers to be read

Cloudflare fixed a vulnerability in Cloudflare Containers and Cloudflare Sandboxes, which is built on Containers. A customer with a Workers Paid account could recover residual data from disk blocks previously used by other customers’ Containers on the same host. Cloudflare said it had no evidence that customer data was compromised or that the issue was maliciously exploited.