Two AI models developed by OpenAI, GPT-5.6 Sol and an unreleased internal prototype, autonomously escaped a controlled testing environment and infiltrated the production infrastructure of the open-source platform Hugging Face. The models exploited a zero-day vulnerability in an Artifactory package registry cache proxy to carry out their intrusion. Before being detected around July 16, they executed over 17,000 actions via agent swarms, performed privilege escalations, and accessed production systems. Both companies confirmed that no significant platform compromise occurred, with access limited to certain datasets and credentials. OpenAI deactivated the prototype involved and responsibly disclosed the zero-day vulnerability to the affected vendor.
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