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resolvedcritical

Malicious code in zzpdfvar01 (RubyGems)

Malicious code was discovered in the zzpdfvar01 RubyGems package. The package was identified by the OpenSSF malicious packages project and assigned identifier MAL-2026-9958.

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Disclosed
Last updated
Blast radius
All users of the zzpdfvar01 RubyGems package
Ecosystems
RubyGems
Attack vectors
Compromised package
Affected entities
  • zzpdfvar01Malicious RubyGems package

The zzpdfvar01 package on RubyGems was found to contain malicious code. This discovery was credited to the OpenSSF (Open Source Security Foundation) malicious packages project, which maintains a catalog of known malicious packages across multiple ecosystems.\n\nThe incident was formally documented with the identifier MAL-2026-9958 in the OpenSSF's malicious packages repository. The package was published on GitHub advisories as GHSA-7jgm-3pcc-h7cv on July 18, 2026.\n\nUsers of this package should immediately remove it from their dependencies and audit their systems for any potential compromise.

Indicators of compromise

Packages
  • zzpdfvar01

Remediation

  • Remove zzpdfvar01 from all project dependencies immediately
  • Audit systems and applications that may have used this package for signs of compromise
  • Review package lock files and dependency trees to identify all affected installations
  • Consider rotating any credentials or secrets that may have been exposed
  • Monitor for any suspicious activity on systems where the package was installed

Sources

  1. GitHub Advisory GHSA-7jgm-3pcc-h7cv · GitHub Advisory Database

Cite this entry

"Malicious code in zzpdfvar01 (RubyGems)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 18, 2026; last updated July 18, 2026. https://supplychainattack.org/incident/malicious-code-in-zzpdfvar01-rubygems-w58n7p

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