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resolvedcritical

Malicious code in test6789.client (NuGet)

Malicious code was discovered in the test6789.client NuGet package. The package was identified and cataloged by the OpenSSF malicious packages project.

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Disclosed
Last updated
Blast radius
Unknown - depends on adoption of affected versions
Ecosystems
NuGet
Attack vectors
Compromised package
Affected entities
  • test6789.clientNuGet package

The test6789.client NuGet package was found to contain malicious code. The vulnerability was identified and documented by the OpenSSF malicious packages initiative, which maintains a public repository of known malicious software supply chain incidents.\n\nThe incident was published on July 20, 2026, and assigned identifier MAL-2026-1890 in the OpenSSF malicious packages database. The package was hosted on the NuGet package registry.\n\nNo specific technical details about the malicious payload or affected versions are provided in the source material beyond the package name and ecosystem.

Indicators of compromise

Packages
  • test6789.client

Remediation

  • Remove test6789.client from all projects and dependencies
  • Audit systems that may have installed or used this package
  • Review NuGet package dependencies for any reliance on test6789.client
  • Monitor for any suspicious activity on systems that may have used this package

Sources

  1. GitHub Advisory GHSA-47mf-fv52-rgr9 · GitHub Advisory Database

Cite this entry

"Malicious code in test6789.client (NuGet)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 20, 2026; last updated July 20, 2026. https://supplychainattack.org/incident/malicious-code-in-test6789-client-nuget-12aje7

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