Z.ai's GLM-5.3 Workers AI model has a cross-request KV cache exposure issue (155 responses affected)
The Z.ai GLM-5.3 Workers AI model caused 155 responses to leak other users' data due to incorrect SGLang inference engine configuration and bugs, involving requests with token lengths exceeding 681,280. Cloudflare fixed the issue and restored service on September 8, 2026, by adjusting the configuration and releasing an SGLang patch to resolve the vulnerability.


















