SecurityCloudflare Blogabout 1 hour ago
Cloudflare Fixes GLM-5.3 Cache Leak
15 min read
Cloudflare fixed a tenant isolation issue in the GLM-5.3 Workers AI model on September 9, 2026, after a researcher alerted them on September 8. The bug caused 155 responses to leak data from other users when prompts exceeded 681,280 tokens. Cloudflare restored the model after patching the SGLang inference engine and adjusting GPU memory pools to hold 2.04 million tokens.
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