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resolvedcritical

Malicious code in zwxbcsacre (RubyGems)

Malicious code was discovered in the zwxbcsacre RubyGems package. The package was flagged by the OpenSSF malicious packages project and assigned identifier MAL-2026-9931.

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Disclosed
Last updated
Blast radius
All users of the zwxbcsacre RubyGems package
Ecosystems
RubyGems
Attack vectors
Compromised package
Affected entities
  • zwxbcsacreRubyGems package containing malicious code

The zwxbcsacre package on RubyGems was identified as containing malicious code. The discovery was credited to the OpenSSF's malicious packages project, which maintains a catalog of known malicious software supply chain incidents.\n\nThe package was assigned the malicious package identifier MAL-2026-9931 in the OpenSSF's tracking system. This indicates the package was intentionally published with harmful code rather than being a legitimate package that was later compromised.\n\nUsers of this package should immediately remove it from their dependencies and audit their systems for any potential impact from the malicious code.

Indicators of compromise

Packages
  • zwxbcsacre

Remediation

  • Remove zwxbcsacre from all Gemfiles and dependency manifests
  • Run bundle update to ensure the package is uninstalled
  • Audit systems that may have executed code from this package
  • Review application logs for any suspicious activity that may have occurred while the package was installed
  • Consider regenerating any credentials or secrets that may have been exposed

Sources

  1. GitHub Advisory GHSA-2wwq-mqc6-669x · GitHub Advisory Database

Cite this entry

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

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