Cloudflare discloses cross-request KV cache leak in GLM-5.3

Cloudflare says a tenant-isolation flaw in the GLM-5.3 model on Workers AI caused some very long prompts to return other customers' data between Aug 27 and Sep 9, affecting 155 responses. The issue is remediated, no deliberate exploitation was found, and SGLang published a coordinated disclosure.

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