OpenAI and Hugging Face partner to address security incident
We are sharing preliminary findings at this stage to help defenders understand what happened and to help calibrate on what models are now capable of. We estimate maximal cyber capabilities by running this evaluation without production classifiers used to prevent models from pursuing high-risk cyber activity. To gain access, the models identified and exploited a zero-day vulnerability (which we’ve now responsibly disclosed to the vendor) in the package registry cache proxy.
- ▪We are sharing preliminary findings at this stage to help defenders understand what happened and to help calibrate on what models are now capable of.
- ▪We estimate maximal cyber capabilities by running this evaluation without production classifiers used to prevent models from pursuing high-risk cyber activity.
- ▪To gain access, the models identified and exploited a zero-day vulnerability (which we’ve now responsibly disclosed to the vendor) in the package registry cache proxy.
Opening excerpt (first ~120 words) tap to expand
July 21, 2026SecurityOpenAI and Hugging Face partner to address security incident during model evaluationLoading…ShareWhat happened during this incidentWhat happened during this incidentActions we are taking nowOur approach to evaluating advanced cyber capabilitiesWhat happened during this incidentActions we are taking nowOur approach to evaluating advanced cyber capabilitiesLast week, Hugging Face disclosed a new kind of security incident(opens in a new window) after they detected and contained an AI agent that compromised their infrastructure, something we expect to become more commonplace with the proliferation of increasingly cyber-capable models.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at OpenAI.
