GoKawiilCloudflare's GLM-5.3 Workers AI model leaked data between users for 13 days
Cloudflare disclosed that its GLM-5.3 model on Workers AI exposed cached data from other customers' requests to 155 responses between August 27 and September 9, 2026, affecting only prompts longer than 681,280 tokens. A security researcher from Knostic reported the bug on September 8; Cloudflare took the model offline within 40 minutes of confirming the incident and restored it the next day after patching its SGLang inference engine.