Update 5:05 PT: The attack has now expanded well beyond
@TanStack and
@Mistral.
373 malicious package-version entries across 169 npm package names, including
@uipath,
@squawk,
@tallyui,
@beproduct, and more.
The malware propagates by stealing your CI credentials and using them to publish new compromised versions.
Full IOCs, affected package list, and detection steps: