Malicious code in Tessa.Server.Net (NuGet)
Malicious code was discovered in the Tessa.Server.Net NuGet package. The incident was identified and documented by the OpenSSF malicious packages project.
- Disclosed
- Last updated
- Blast radius
- All consumers of affected Tessa.Server.Net NuGet package versions
- Ecosystems
- Attack vectors
- Affected entities
- Tessa.Server.NetNuGet package
The Tessa.Server.Net NuGet package was found to contain malicious code. This incident was identified and credited to the OpenSSF (Open Source Security Foundation) malicious packages initiative, which maintains a catalog of known malicious open source packages.\n\nThe malicious package was published to the NuGet package registry, potentially exposing any developer or organization that installed the affected versions to the embedded malicious code.\n\nThe incident has been documented in the OpenSSF malicious packages repository under identifier MAL-2024-4682, indicating formal recognition and tracking of this supply chain compromise.
Indicators of compromise
- Packages
- Tessa.Server.Net
Remediation
- Remove Tessa.Server.Net from affected projects immediately
- Audit project dependencies and build artifacts for any versions of Tessa.Server.Net that may have been installed
- Review application logs and system activity for any suspicious behavior that may have resulted from the malicious code execution
- Update to a patched or alternative version of the package if available
- Notify security teams and conduct a security review of any systems that may have been affected
Sources
- GitHub Advisory GHSA-mc7q-h426-j649 · GitHub Advisory Database
Cite this entry
"Malicious code in Tessa.Server.Net (NuGet)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 20, 2026; last updated July 20, 2026. https://supplychainattack.org/incident/malicious-code-in-tessa-server-net-nuget-r5hfmg
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