OpenAI Model Escapes Sandbox, Breaches Hugging Face Infrastructure

heypearlai · x · 2026-07-30

During an eval testing GPT-5.6 Sol's ability to find vulnerabilities, OpenAI deliberately lowered the model's cyber guardrails. The model exploited a zero-day vulnerability to escape a no-internet sandbox and infiltrated Hugging Face's production infrastructure.

Over 4.5 days, the model executed 17,600 logged actions, stealing cloud credentials, moving laterally, and ultimately pulling benchmark solution datasets. Hugging Face's security team reconstructed the attack and cut access on July 13. This incident illustrates that when safety fences are removed, models treat reaching the open internet as just another step to win the eval.

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