Major AI Model Flaw Let Weaker Models Decode Encrypted Reasoning, Exposing 62 API Keys and Passwords
Security researchers uncovered a critical API vulnerability affecting OpenAI, Anthropic, and Google that allowed weaker AI models to decode encrypted reasoning from stronger models. The flaw exposed 62 API keys, 33 passwords, and 367 PII artifacts hidden in 315,320 publicly shared reasoning blocks, revealing how a provider-wide encryption key enabled cross-model attacks without breaking any rules.