OpenAI: No User Data Breach in TanStack Supply Chain Attack

On May 14, OpenAI released a statement addressing the recent "Mini Shai-Hulud" supply chain attack. After detecting malicious attacks targeting the widely used open-source library TanStack and several common npm packages, the security team completed an internal system review. The review concluded that there is currently no evidence that any user data was leaked or accessed without authorization.
Although OpenAI's core services were not affected by this attack, the company issued a critical security advisory in light of local environment risks.
macOS users must update by the deadline
OpenAI stated that to ensure terminal security and defend against potential threats, all macOS users running its official applications must apply the software update by June 12, 2026.
The affected TanStack is an open-source toolset widely adopted in front-end development. A supply chain attack occurs when attackers embed malicious code into foundational tools or packages commonly used by developers, thereby compromising the larger platforms that depend on them.
Since OpenAI also uses such open-source libraries in its development workflow, the security team's swift action effectively contained the risk. OpenAI is now working with security researchers to enhance ongoing monitoring of third-party dependencies, protecting the privacy and security of its hundreds of millions of global users.
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On May 14, OpenAI released a statement addressing the recent "Mini Shai-Hulud" supply chain attack. After detecting malicious attacks targeting the widely used open-source library TanStack and several common npm packages, the security team completed an internal system review. The review concluded that there is currently no evidence that any user data was leaked or accessed without authorization.
Although OpenAI's core services were not affected by this attack, the company issued a critical security advisory in light of local environment risks.
macOS users must update by the deadline
OpenAI stated that to ensure terminal security and defend against potential threats, all macOS users running its official applications must apply the software update by June 12, 2026.
The affected TanStack is an open-source toolset widely adopted in front-end development. A supply chain attack occurs when attackers embed malicious code into foundational tools or packages commonly used by developers, thereby compromising the larger platforms that depend on them.
Since OpenAI also uses such open-source libraries in its development workflow, the security team's swift action effectively contained the risk. OpenAI is now working with security researchers to enhance ongoing monitoring of third-party dependencies, protecting the privacy and security of its hundreds of millions of global users.
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