#5
BleepingComputer
general
September 27, 2026 at 14:13 UTC
Cloudflare fixes Containers cross-tenant flaw exposing customer data
By Bill Toulas
AI Summary
Cloudflare patched a cross-tenant data leakage vulnerability in its Containers and Sandboxes product that allowed Workers Paid account holders to read residual memory from other customers' containers sharing the same physical host. The flaw is a classic container isolation failure — a category of vulnerability with significant implications for multi-tenant cloud environments where co-residents may be competitors or adversaries. Organizations relying on Cloudflare Containers for sensitive workload isolation should review Cloudflare's disclosure for affected versions and remediation timelines.
Relevance score: 75.0/100
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