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Malicious code in zztest17785553733 (RubyGems)

Malicious code was discovered in the RubyGems package zztest17785553733. The package was identified and documented by the OpenSSF malicious packages project.

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Disclosed
Last updated
Blast radius
Low (test package with limited adoption)
Ecosystems
Attack vectors
Affected entities
  • zztest17785553733RubyGems package containing malicious code

A RubyGems package named zztest17785553733 was found to contain malicious code. The discovery was credited to the OpenSSF (Open Source Security Foundation) and documented in their malicious packages repository.\n\nThe package was identified with the malicious package identifier MAL-2026-9980 and tracked in the OpenSSF's public malicious packages database. This represents a confirmed supply chain compromise of the RubyGems ecosystem.\n\nUsers who installed this package should remove it immediately and audit their systems for any unauthorized activity.

Indicators of compromise

Packages
  • zztest17785553733

Remediation

  • Remove the zztest17785553733 package from all systems
  • Audit systems for any unauthorized changes or activity
  • Review application dependencies to ensure no reliance on this package
  • Update to a safe version or alternative package if functionality was required

Sources

  1. GitHub Advisory GHSA-p6jp-c54v-c5v9 · GitHub Advisory Database

Cite this entry

"Malicious code in zztest17785553733 (RubyGems)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 18, 2026; last updated July 18, 2026. https://supplychainattack.org/incident/malicious-code-in-zztest17785553733-rubygems-sph0tw

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