Malicious code in Tessa.Web.Client.Net (NuGet)
Malicious code was discovered in the Tessa.Web.Client.Net NuGet package. The package was identified by the OpenSSF malicious packages project and reported via GitHub Security Advisory GHSA-qqc8-8f3p-cq7w.
- Disclosed
- Last updated
- Blast radius
- Unknown; depends on adoption of affected versions
- Ecosystems
- Attack vectors
- Affected entities
- Tessa.Web.Client.Net
The Tessa.Web.Client.Net package on NuGet was found to contain malicious code. This incident was identified and credited to the OpenSSF's malicious packages project, which maintains a catalog of known malicious software supply chain incidents.\n\nThe advisory was published on July 20, 2026, and assigned GitHub Security Advisory identifier GHSA-qqc8-8f3p-cq7w. The malicious package entry is tracked in the OpenSSF's malicious packages repository under reference MAL-2024-4684.\n\nAffected developers and organizations using Tessa.Web.Client.Net should immediately audit their dependencies and remove or update to a safe version if available.
Indicators of compromise
- Packages
- Tessa.Web.Client.Net
Remediation
- Remove or uninstall the Tessa.Web.Client.Net package from affected projects
- Audit all systems where the malicious package may have been installed or executed
- Review the GitHub Security Advisory GHSA-qqc8-8f3p-cq7w for additional details and indicators of compromise
- Check the OpenSSF malicious packages repository for affected version numbers and safe alternatives
- Update to a patched or alternative package version if available
Sources
- GitHub Advisory GHSA-qqc8-8f3p-cq7w · GitHub Advisory Database
Cite this entry
"Malicious code in Tessa.Web.Client.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-web-client-net-nuget-eqj42n
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