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Malicious code in zztestproxyfooabcxyz (RubyGems)

Malicious code was discovered in the zztestproxyfooabcxyz RubyGems package. The package was identified and cataloged by the OpenSSF malicious packages project.

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Disclosed
Last updated
Blast radius
Unknown; depends on adoption of the malicious package versions
Ecosystems
Attack vectors
Affected entities
  • zztestproxyfooabcxyz

A malicious package named zztestproxyfooabcxyz was published to the RubyGems package repository. The package contained malicious code and was identified through the OpenSSF's malicious packages tracking initiative.\n\nThe incident was disclosed on 2026-07-18 via a GitHub Security Advisory (GHSA-68q2-xv64-m8x5). The package has been cataloged in the OpenSSF malicious packages repository for reference and tracking purposes.\n\nThe exact scope of the malicious functionality and the number of affected installations is not detailed in the available information.

Indicators of compromise

Packages
  • zztestproxyfooabcxyz

Remediation

  • Remove any installations of zztestproxyfooabcxyz from affected systems
  • Audit systems that may have installed this package for signs of compromise
  • Review dependency manifests to ensure this package is not listed as a dependency
  • Monitor for similar typosquatting or malicious package attempts

Sources

  1. GitHub Advisory GHSA-68q2-xv64-m8x5 · GitHub Advisory Database

Cite this entry

"Malicious code in zztestproxyfooabcxyz (RubyGems)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 18, 2026; last updated July 18, 2026. https://supplychainattack.org/incident/malicious-code-in-zztestproxyfooabcxyz-rubygems-1hqoz3

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