SecurityBleepingComputerabout 10 hours ago
Cloudflare Fixes Containers Cross-Tenant Data Leak
3 min read
Cloudflare patched a Containers and Sandboxes flaw that let Workers Paid customers recover residual data from other tenants' disks on the same host. Researcher Oren Yomtov reported it via HackerOne on September 4; residual data appeared on 18 of 24 placements. Cloudflare removed the zeroing-skip setting and finished mitigations by September 19, 2026, finding no evidence of real exposure.
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