Date Discovered

March 12, 2019


Microsoft NuGet is prone to a security bypass vulnerability. An attacker can exploit this issue to bypass certain security restrictions and perform unauthorized actions.

Technologies Affected

  • Microsoft .NET Core 1.0
  • Microsoft .NET Core 1.1
  • Microsoft .NET Core 2.1
  • Microsoft .NET Core SDK 1.1
  • Microsoft .NET Core SDK 2.1.500
  • Microsoft NuGet 4.3.1
  • Microsoft NuGet 4.4.2
  • Microsoft NuGet 4.5.2
  • Microsoft NuGet 4.6.3
  • Microsoft NuGet 4.7.2
  • Microsoft NuGet 4.8.2
  • Microsoft NuGet 4.9.4
  • Microsoft Visual Studio for Mac
  • Mono-Project Mono
  • Mono-Project Mono 5.20.0


Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells.
To exploit this vulnerability, an attacker requires local access to an affected computer. Grant local access for trusted and accountable users only.

Updates are available. Please see the references or vendor advisory for more information.



The vendor reported this issue.

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