GCVE-110-OSM-2026-785

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published March 27, 2026

Malicious OpenAI integration library for .NET. Supply chain attack targeting AI application developers 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.

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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	Forge.Open.AI	all (affected)	—

References

Malicious nuget package: Forge.Open.AI

advisory

vendor

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