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Cloudflare’s AI Cache Leak: How 155 Responses Got Other Users’ Data

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Original editorial illustration of a dark server hall at night: two adjacent glowing memory-grid panels, warm amber light from the left panel spilling across the boundary into its neighbour, and a long ribbon of amber light stretching past the edge of its own panel

Cloudflare’s AI Cache Leak: How 155 Responses Got Other Users’ Data In brief Cloudflare says a sizing mismatch and an SGLang bug let its GLM-5.3 model return other customers’ data in 155 responses, all to very long prompts. The leak ran from August 27 to September 9, 2026, and only affected prompts longer than 681,280 … Read more