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resolvedcritical

Malicious code in ytorch (PyPI)

Attacker distributed 900+ malicious packages via PyPI, including ytorch, designed to infect local browsers with malicious extensions. The malicious extension manipulates clipboard content and replaces cryptocurrency wallet addresses to redirect funds to attacker-controlled wallets.

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Disclosed
Last updated
Blast radius
900+ malicious packages distributed via PyPI
Ecosystems
PyPI
Attack vectors
Compromised package
Affected entities
  • ytorchmalicious package distributed via PyPI

An attacker distributed over 900 malicious packages via the Python Package Index (PyPI), including a package named ytorch. These packages were designed to install malicious browser extensions on infected systems.

The malicious extensions perform clipboard manipulation and cryptocurrency wallet address replacement attacks. When users copy cryptocurrency wallet addresses, the malicious extension intercepts and replaces them with attacker-controlled addresses, redirecting cryptocurrency transfers to the attacker.

This incident was identified and documented by the OpenSSF's malicious-packages repository (MAL-2023-2471). The ytorch package was one of the affected packages in this large-scale distribution campaign.

Indicators of compromise

Packages
  • ytorch

Remediation

  • Immediately uninstall ytorch and any other suspicious packages from affected systems
  • Audit pip package installation history for ytorch and related packages
  • Scan systems for malicious browser extensions, particularly those affecting clipboard functionality
  • Review recent cryptocurrency transactions for suspicious wallet address changes
  • Update all browser extensions and verify their legitimacy
  • Use package verification tools and check PyPI package metadata before installation
  • Monitor for unauthorized browser extension installations

Sources

  1. GitHub Advisory GHSA-xm2p-9pcc-m2vf · GitHub Advisory Database

Cite this entry

"Malicious code in ytorch (PyPI)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 21, 2026; last updated July 21, 2026. https://supplychainattack.org/incident/malicious-code-in-ytorch-pypi-fvj594

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