Malicious code in Tessa.Core (NuGet)
Malicious code was discovered in the Tessa.Core NuGet package. The incident was identified and documented by the OpenSSF malicious packages project.
- Disclosed
- Last updated
- Blast radius
- Unknown; depends on adoption of affected versions
- Ecosystems
- Attack vectors
- Affected entities
- Tessa.CoreNuGet package
Malicious code was found in the Tessa.Core package distributed via NuGet. The vulnerability was identified and credited to the OpenSSF's malicious packages tracking initiative.\n\nThe incident is documented in the GitHub Advisory database (GHSA-2rr7-hmjc-qwgr) and cross-referenced in the OpenSSF malicious packages repository under identifier MAL-2024-4678.\n\nNo specific technical details regarding the nature of the malicious payload, affected versions, or distribution timeline are provided in the available source material.
Indicators of compromise
- Packages
- Tessa.Core
Remediation
- Remove or update Tessa.Core to a patched version if available
- Review systems that may have installed affected versions of Tessa.Core
- Monitor for any suspicious activity on systems that used the compromised package
- Check NuGet package history and verify integrity of dependencies
Sources
- GitHub Advisory GHSA-2rr7-hmjc-qwgr · GitHub Advisory Database
Cite this entry
"Malicious code in Tessa.Core (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-core-nuget-odjozj
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