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resolvedcritical

Malicious code in Tessa.Web.Core (NuGet)

Malicious code was discovered in the Tessa.Web.Core NuGet package. The incident was identified and documented by the OpenSSF malicious packages project.

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Disclosed
Last updated
Blast radius
Tessa.Web.Core package consumers on NuGet
Ecosystems
NuGet
Attack vectors
Compromised package
Affected entities
  • Tessa.Web.CoreNuGet package

A malicious code vulnerability was identified in the Tessa.Web.Core package distributed via NuGet. The package was flagged as containing malicious code and documented in the OpenSSF's malicious packages repository.\n\nThe incident was credited to the OpenSSF (Open Source Security Foundation) and tracked under identifier MAL-2024-4685. The advisory was published on GitHub as GHSA-cmrw-9gx2-qgw5.\n\nAffected users should immediately remove or update the Tessa.Web.Core package from their environments.

Indicators of compromise

Packages
  • Tessa.Web.Core

Remediation

  • Remove or uninstall the affected Tessa.Web.Core package from all systems
  • Review package dependencies and audit any systems that may have installed the malicious package
  • Check for any suspicious activity or unauthorized access on systems that used this package
  • Update to a clean, verified version of Tessa.Web.Core if available
  • Monitor NuGet package feeds for security advisories

Sources

  1. GitHub Advisory GHSA-cmrw-9gx2-qgw5 · GitHub Advisory Database

Cite this entry

"Malicious code in Tessa.Web.Core (NuGet)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 20, 2024; last updated July 20, 2026. https://supplychainattack.org/incident/malicious-code-in-tessa-web-core-nuget-3me5z6

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