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resolvedcritical

Malicious code in zzfadgivar09 (RubyGems)

Malicious code was discovered in the zzfadgivar09 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
RubyGems
Attack vectors
Compromised package
Affected entities
  • zzfadgivar09

The zzfadgivar09 package on RubyGems was found to contain malicious code. This incident was identified and documented by the OpenSSF's malicious packages project, which maintains a public catalog of known malicious software supply chain incidents.\n\nThe package was published on RubyGems and made available to Ruby developers. The malicious nature of the package was detected and reported through the OpenSSF initiative, which coordinates disclosure and tracking of such incidents.\n\nThe incident has been cataloged under reference MAL-2026-9945 in the OpenSSF malicious packages repository, indicating it has been formally documented and tracked as a confirmed supply chain attack.

Indicators of compromise

Packages
  • zzfadgivar09

Remediation

  • Remove any installations of the zzfadgivar09 package from your Ruby environment
  • Audit your Gemfile and Gemfile.lock for any dependencies on zzfadgivar09
  • Review application logs and system activity for any suspicious behavior that may have occurred while the malicious package was installed
  • Update to a clean Ruby environment without the affected package
  • Check the OpenSSF malicious packages repository for additional details and indicators of compromise

Sources

  1. GitHub Advisory GHSA-mj3j-c9pw-q45r · GitHub Advisory Database

Cite this entry

"Malicious code in zzfadgivar09 (RubyGems)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 18, 2026; last updated July 18, 2026. https://supplychainattack.org/incident/malicious-code-in-zzfadgivar09-rubygems-6fdc72

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