Cloudflare fixes Containers cross-tenant flaw exposing customer data

Cloudflare patched a cross-tenant flaw in Containers and Sandboxes that let Workers Paid account holders recover residual data from other customers' containers on the same physical host. The bug stemmed from improper memory isolation during container teardown. Cloudflare said no active exploitation was observed and urged users to rotate secrets stored in affected environments. The fix is deployed globally.