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Malware in @servicetitan/tanstack-query-mobx

Malware discovered in the npm package @servicetitan/tanstack-query-mobx. Systems with this package installed are considered fully compromised and require immediate remediation.

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Disclosed
Last updated
Blast radius
Any system with the package installed or running
Ecosystems
Attack vectors
Affected entities
  • @servicetitan/tanstack-query-mobx

A malicious package named @servicetitan/tanstack-query-mobx was published to npm and contains malware. Any computer that has installed or run this package should be considered fully compromised.\n\nThe malware grants full control of affected systems to an outside entity. All secrets, keys, and credentials stored on compromised machines must be rotated immediately from a different, unaffected computer.\n\nWhile the package should be removed, removal alone may not eliminate all malicious software that was installed as a result of the compromise. A full security audit and potential system rebuild may be necessary.

Indicators of compromise

Packages
  • @servicetitan/tanstack-query-mobx

Remediation

  • Immediately remove the @servicetitan/tanstack-query-mobx package from all systems
  • Rotate all secrets, keys, and credentials from a different, unaffected computer
  • Conduct a full security audit of any system that had this package installed
  • Consider rebuilding affected systems from clean media
  • Monitor for signs of unauthorized access or data exfiltration
  • Review logs for any suspicious activity during the time the package was installed

Sources

  1. GitHub Advisory GHSA-x9rp-2ppw-m5p8 · GitHub Advisory Database

Cite this entry

"Malware in @servicetitan/tanstack-query-mobx." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed August 4, 2026; last updated August 4, 2026. https://supplychainattack.org/incident/malware-in-servicetitan-tanstack-query-mobx-x0am0h

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