OpenAI says no user data was touched in the TanStack npm worm

https://media.thenextweb.com/2026/04/OpenAI-lawsuite.avif

Two corporate laptops, some credential material, and a forced macOS app update. The interesting part is how the malicious packages got published in the first place: not by a stolen npm password, but by TanStack’s own legitimate release pipeline, after the attacker code took over the runner mid-build.


OpenAI said on Wednesday that it found no evidence of user data being accessed, products being compromised, or its software being altered after a supply-chain compromise of the TanStack npm packages earlier this week.

Two employee devices in OpenAI’s corporate environment were affected, the company said in a notice published on its website. Limited credential material was exfiltrated from internal code repositories. Passwords and API keys were not.

The interesting part is how the malicious packages got there. On 11 May, between 19:20 and 19:26 UTC, 84 malicious artefacts were published across 42 packages in the @tanstack namespace, including @tanstack/react-router, which alone...

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