VDB
GCVE-VVD-OSM-2026-305
GCVE-VVD-OSM-2026-305
Advisory PublishedCVSS 8.8/10
Malicious Tessa web client library for .NET. Supply chain attack targeting web-based Tessa clients with MSBuild-based code execution.
Exploits NuGet's MSBuild integration by placing malicious code in .targets files as inline tasks. When projects build, MSBuild automatically imports and executes these tasks, downloading .NET executables from throwaway GitHub repositories with embedded obfuscated command-line payloads.
Weaknesses (CWE)
CWE-506Embedded Malicious Code
Risk Scores
CVSS 3.1
8.8/10
High · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| unknown | io.github.leetcrunch:scribejava-core | all (affected), all (affected), all (affected), all (affected), all (affected), all (affected), all (affected), all (affected) | — |
| unknown | Tessa.Web.Client.Net | all (affected) | — |
| unknown | quartz.quartz-markdown-editor | 0.3.0 (affected), 0.3.0 (affected), 0.3.0 (affected), 0.3.0 (affected), 0.3.0 (affected), 0.3.0 (affected) | — |
| unknown | larvel/framework | Unknown (affected) | — |
References
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