SecurityCloudflare Blogabout 1 hour ago
Cloudflare Fixes Container Data Exposure Flaw
8 min read
Cloudflare remediated a cross-tenant data exposure vulnerability in its Containers and Sandboxes products after researcher Oren Yomtov reported it on September 4, 2026. A misconfigured storage pool let Workers Paid accounts read residual disk blocks from other customers' containers. Cloudflare disabled block reuse, retired affected disks and caches, and found no evidence of malicious exploitation.
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