Skip to content
supplychainattack.orgSupply chain attack incident catalog
resolvedcritical

Malicious code in test6789.v3 (NuGet)

Malicious code was discovered in test6789.v3 NuGet package. The package was identified and reported by the OpenSSF malicious-packages project.

ShareXLinkedInHacker News
Disclosed
Last updated
Blast radius
Packages published to NuGet public registry; impact scope depends on adoption of affected versions.
Ecosystems
NuGet
Attack vectors
Compromised package
Affected entities
  • test6789.v3NuGet package

The NuGet package test6789.v3 was found to contain 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 published to the public NuGet registry and classified as critical severity. The incident was documented in the OpenSSF malicious-packages repository under identifier MAL-2026-1892.\n\nThis appears to be a test or proof-of-concept package used for security research and catalog maintenance purposes.

Indicators of compromise

Packages
  • test6789.v3

Remediation

  • Remove test6789.v3 from any project dependencies
  • Audit project history for any installations or usage of test6789.v3
  • Review NuGet package sources and implement package verification policies
  • Monitor for similar malicious packages in the NuGet ecosystem

Sources

  1. GitHub Advisory GHSA-57fh-f2m3-9fx5 · GitHub Advisory Database

Cite this entry

"Malicious code in test6789.v3 (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-v3-nuget-pikp0j

Suggest a correction

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

Related incidents

  1. containedcritical

    Malicious code in intercom-php (Packagist)

    The intercom-php package on Packagist was compromised with malicious code as part of the Mini Shai-Hulud campaign by the TeamPCP threat actor. The malicious payload steals credentials and can propagate to NPM packages using discovered credentials.

    Mini Shai HuludTeamPCPNuGetCompromised packageMalicious maintainer
  2. resolvedcritical

    Malicious code in Ultimate.Wpf.Toolkit (NuGet)

    Multiple versions of the Ultimate.Wpf.Toolkit NuGet package contained malicious code. The incident was identified and documented by the OpenSSF malicious packages project.

    NuGetCompromised package
  3. resolvedcritical

    Malicious code in YoutubeExtractor.Net (NuGet)

    Malicious code was discovered in the YoutubeExtractor.Net NuGet package. The incident was identified and documented by the OpenSSF malicious packages project.

    NuGetCompromised package
  4. resolvedcritical

    Malicious code in Zendesk.OAuth (NuGet)

    Malicious code was discovered in multiple versions of the Zendesk.OAuth NuGet package. The incident was identified and documented by the OpenSSF malicious packages project.

    NuGetCompromised package