Skip to content
supplychainattack.orgSupply chain attack incident catalog
resolvedcritical

Malicious code in zztxtwtmp11 (RubyGems)

Malicious code was discovered in the zztxtwtmp11 RubyGems package. The package was identified and reported by the OpenSSF malicious packages project.

ShareXLinkedInHacker News
Disclosed
Last updated
Blast radius
Unknown; depends on adoption of affected versions
Ecosystems
RubyGems
Attack vectors
Compromised package
Affected entities
  • zztxtwtmp11

The zztxtwtmp11 package on RubyGems was found to contain malicious code. The discovery was credited to the OpenSSF (Open Source Security Foundation) malicious packages initiative, which maintains a catalog of known malicious packages across multiple ecosystems.\n\nThe incident was documented in GitHub Advisory GHSA-c9c6-4rj8-7rmj and tracked in the OpenSSF malicious packages repository. The package has been identified as a supply chain threat to Ruby developers who may have installed or depended on it.\n\nNo specific technical details about the malicious payload or affected versions are provided in the source material, though the package name itself suggests it may have been a typosquatting or obfuscation attempt.

Indicators of compromise

Packages
  • zztxtwtmp11

Remediation

  • Remove the zztxtwtmp11 package from all environments
  • Audit Gemfile.lock and dependency trees for any references to zztxtwtmp11
  • Review application logs for any suspicious activity that may have occurred while the package was installed
  • Update to a safe version or remove the dependency entirely if it was not intentionally added

Sources

  1. GitHub Advisory GHSA-c9c6-4rj8-7rmj · GitHub Advisory Database

Cite this entry

"Malicious code in zztxtwtmp11 (RubyGems)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 18, 2026; last updated July 18, 2026. https://supplychainattack.org/incident/malicious-code-in-zztxtwtmp11-rubygems-4eahks

Suggest a correction

Found an error or have a newer source? Corrections to factual errors take priority over new entries.

Related incidents

  1. resolvedcritical

    Malicious code in zzfadgivar05 (RubyGems)

    Malicious code was discovered in the zzfadgivar05 RubyGems package. The package was identified by the OpenSSF malicious packages project and reported via GitHub Advisory GHSA-3gfr-fq7v-cc26.

    RubyGemsCompromised package
  2. resolvedcritical

    Malicious code in zzjinavcsgit (RubyGems)

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

    RubyGemsCompromised package
  3. resolvedcritical

    Malicious code in zztest17785553702 (RubyGems)

    Malicious code was discovered in the RubyGems package zztest17785553702. The package was identified and cataloged by the OpenSSF malicious packages project.

    RubyGemsCompromised package
  4. 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.

    RubyGemsCompromised package