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resolvedcritical

Malicious code in zipf (PyPI)

Malicious code was discovered in the zipf package on PyPI. The package was identified by the OpenSSF malicious-packages project as containing malicious code.

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Disclosed
Last updated
Blast radius
Unknown; depends on zipf adoption and affected versions
Ecosystems
PyPI
Attack vectors
Compromised package
Affected entities
  • zipfPyPI package

The zipf package on PyPI was found to contain malicious code. The discovery was credited to the OpenSSF's malicious-packages project, which maintains a catalog of known malicious packages in open-source ecosystems.\n\nThe incident was tracked under identifier MAL-2025-6624 in the OpenSSF malicious-packages repository. The advisory was published on GitHub on 2026-07-21.\n\nNo specific details regarding the nature of the malicious code, affected versions, or the mechanism of compromise are provided in the source material.

Indicators of compromise

Packages
  • zipf

Remediation

  • Remove or uninstall the zipf package from affected systems
  • Review any systems that installed zipf for signs of compromise
  • Monitor for updates or security advisories from the package maintainers
  • Consider using alternative packages for the same functionality

Sources

  1. GitHub Advisory GHSA-3cpc-wvqf-ffm6 · GitHub Advisory Database

Cite this entry

"Malicious code in zipf (PyPI)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 21, 2026; last updated July 21, 2026. https://supplychainattack.org/incident/malicious-code-in-zipf-pypi-15p4sm

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