Malicious code in zzdelay2119 (RubyGems)
Malicious code was discovered in the zzdelay2119 RubyGems package. The package was identified by the OpenSSF malicious packages project and assigned identifier MAL-2026-9935.
- Disclosed
- Last updated
- Blast radius
- All users of the zzdelay2119 RubyGems package
- Ecosystems
- Attack vectors
- Affected entities
- zzdelay2119RubyGems package
The zzdelay2119 package on RubyGems was found to contain malicious code. This discovery was made and documented by 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-2026-9935 and reported through GitHub's advisory system (GHSA-jxmh-p3gq-2q73). The incident was published on July 18, 2026.\n\nAny system that installed or used the zzdelay2119 package should be considered potentially compromised.
Indicators of compromise
- Packages
- zzdelay2119
Remediation
- Remove the zzdelay2119 package from all systems where it was installed
- Audit systems for any suspicious activity or unauthorized changes that may have resulted from the malicious package
- Review dependency trees to identify all affected applications and services
- Update to a clean version if a legitimate replacement is available, or remove the dependency entirely
Sources
- GitHub Advisory GHSA-jxmh-p3gq-2q73 · GitHub Advisory Database
Cite this entry
"Malicious code in zzdelay2119 (RubyGems)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 18, 2026; last updated July 18, 2026. https://supplychainattack.org/incident/malicious-code-in-zzdelay2119-rubygems-ikpuvy
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