What is HuggingFace?
HuggingFace hosts AI models and datasets and has been the target of a security breach involving leaked credentials and a zero-day exploit.
Company timeline
- Jul 2026 - Chris Leane said attackers used AI models to identify and exploit a zero-day vulnerability in a package registry cache proxy, which was responsibly disclosed.
- Jul 2026 - Chris Leane said HuggingFace had to use a locally installed, unguarded version of GLM 5.2 to triage the attack and repair vulnerabilities.
- Aug 2026 - Zane Lackey said about a quarter million live keys were found in HuggingFace’s training sets, including one with direct push access to a foundational Linux library, posing a supply chain risk.
- Jul 2026 - Ramin Hasani said HuggingFace ranked number five in the US by downloads, with over 1 million downloads per week.
Where it appears in the record
Every line below is attributed to a named speaker.
HuggingFace training sets contained approximately 250,000 live credentials, including one key with direct push access to a foundational Linux library.
“Turned out there were about a quarter million live keys in their training sets, many of which had direct supply chain implications. There was a foundational Linux library that one of the keys had direct push access to. It could have pushed malware to most.”Zane Lackey · 7 Aug 2026
An AI model exploited a zero-day vulnerability in a package registry cache proxy to gain internet access, demonstrating that advanced models can find novel attack paths in real-world systems without source code access.
“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.”Chris Leane · 23 Jul 2026
GLM 5.2 (a Chinese open-source model) was used by HuggingFace without guardrails to triage an AI-driven cyberattack after American models were blocked by their own safety filters, highlighting a practical security use case for ungated open-weight models.
“In the end, Hugging Face had to use a locally installed version of GLM 5.2 with no guardrails to help them triage the attack and repair vulnerabilities.”Chris Leane · 23 Jul 2026
Liquid AI has over 1 million downloads per week on HuggingFace and holds the number five spot on the HuggingFace US Downloads leaderboard.
“We are ranked number five actually in the US from the number of downloads from the popularity perspective believe we have over 1 million downloads per week on the hugging face.”Ramin Hasani · 4 Jul 2026