Malicious code in zztestownedtmp1 (RubyGems)
Malicious code was discovered in the zztestownedtmp1 RubyGems package. The package was identified and cataloged by the OpenSSF malicious packages project.
- Disclosed
- Last updated
- Blast radius
- Unknown; depends on adoption of affected versions
- Ecosystems
- Attack vectors
- Affected entities
- zztestownedtmp1
A RubyGems package named zztestownedtmp1 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 incident was formally tracked under identifier MAL-2026-9986 in the OpenSSF malicious packages database. The package was published on GitHub advisories (GHSA-vfp8-q6q8-jfpp) on July 18, 2026.\n\nThis appears to be a case of a malicious package being published to the RubyGems registry, likely as part of a test or demonstration of supply chain attack detection capabilities.
Indicators of compromise
- Packages
- zztestownedtmp1
Remediation
- Remove or uninstall the zztestownedtmp1 package from any systems where it may have been installed
- Review application dependencies to ensure no reliance on this package
- Monitor systems for any suspicious activity that may have resulted from installation of this package
- Check RubyGems advisories and OpenSSF malicious packages database for updates on this incident
Sources
- GitHub Advisory GHSA-vfp8-q6q8-jfpp · GitHub Advisory Database
Cite this entry
"Malicious code in zztestownedtmp1 (RubyGems)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 18, 2026; last updated July 18, 2026. https://supplychainattack.org/incident/malicious-code-in-zztestownedtmp1-rubygems-1g6ik3
Suggest a correction
Found an error or have a newer source? Corrections to factual errors take priority over new entries.
Related incidents
- 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 - 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 - 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 - 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