VDB
GCVE-110-OSM-2026-264
GCVE-110-OSM-2026-264
Advisory PublishedCVSS 9.6/10
Malicious Blazor authentication library. Supply chain attack targeting web applications built with Blazor framework 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
9.6/10
Critical · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| unknown | Stl.Blazor.Authentication.Net | all (affected) | — |
| unknown | Winforms | all (affected) | — |
| unknown | botbooster | * (affected) | — |
| unknown | Whatsapp.API | all (affected), all (affected), all (affected), all (affected), all (affected), * (affected) | — |
| unknown | KucoinExchange.Net | all (affected), all (affected), * (affected), all (affected), all (affected), all (affected), * (affected), all (affected) | — |
Aliases
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