Monitor vulnerabilities like this one. Sign up free to get alerted when software you use is affected.

NuGet Client Package Download Validation Updated

GHSA-g4vj-cjjj-v7hg
Summary

The NuGet client now checks package ID and version during download to prevent tampering. This update affects various NuGet and .NET SDK versions, including .NET 8 and .NET 9. To stay secure, update to the latest patched versions of NuGet and .NET SDK. No workarounds are available.

What to do
  • Update nuget.protocol to version 7.3.1.
  • Update nuget.packaging to version 4.9.7.
  • Update nuget.packaging to version 5.11.7.
  • Update nuget.packaging to version 6.8.2.
  • Update nuget.packaging to version 6.11.2.
  • Update nuget.packaging to version 6.12.5.
  • Update nuget.packaging to version 6.14.3.
  • Update nuget.packaging to version 7.0.3.
  • Update nuget.packaging to version 7.3.1.
  • Update nuget.protocol to version 4.9.7.
  • Update nuget.protocol to version 5.11.7.
  • Update nuget.protocol to version 6.8.2.
  • Update nuget.protocol to version 6.11.2.
  • Update nuget.protocol to version 6.12.5.
  • Update nuget.protocol to version 6.14.3.
  • Update nuget.protocol to version 7.0.3.
  • Update nuget.commandline to version 4.9.7.
  • Update nuget.commandline to version 5.11.7.
  • Update nuget.commandline to version 6.8.2.
  • Update nuget.commandline to version 6.11.2.
  • Update nuget.commandline to version 6.12.5.
  • Update nuget.commandline to version 6.14.3.
  • Update nuget.commandline to version 7.0.3.
  • Update nuget.commandline to version 7.3.1.
Affected software
Ecosystem VendorProductAffected versions
nuget – nuget.protocol 7.3.0
>= 4.9.0, <= 4.9.6
>= 5.11.0, <= 5.11.6
>= 6.8.0, <= 6.8.1
>= 6.11.0, <= 6.11.1
>= 6.12.0, <= 6.12.4
>= 6.14.0, <= 6.14.2
>= 7.0.0, <= 7.0.2
Fix: upgrade to 7.3.1
nuget – nuget.packaging >= 4.9.0, <= 4.9.6
>= 5.11.0, <= 5.11.6
>= 6.8.0, <= 6.8.1
>= 6.11.0, <= 6.11.1
>= 6.12.0, <= 6.12.4
>= 6.14.0, <= 6.14.2
>= 7.0.0, <= 7.0.2
7.3.0
Fix: upgrade to 4.9.7
nuget – nuget.commandline >= 4.9.0, <= 4.9.6
>= 5.11.0, <= 5.11.6
>= 6.8.0, <= 6.8.1
>= 6.11.0, <= 6.11.1
>= 6.12.0, <= 6.12.4
>= 6.14.0, <= 6.14.2
>= 7.0.0, <= 7.0.2
7.3.0
Fix: upgrade to 4.9.7
Original title
Defense in Depth update for NuGet Client
Original description
### Impact
This update adds validation of the package ID and version during package download, in addition to the existing package signature validation.

### Patches

#### NuGet

The following NuGet.exe, NuGet.CommandLine, NuGet.Packaging, and NuGet.Protocol versions have been patched:

|Affected versions|Patched version|
|--|--|
|>= 4.9.0, <= 4.9.6|4.9.7|
|>= 5.11.0, <= 5.11.6|5.11.7|
|>= 6.8.0, <= 6.8.1|6.8.2|
|>= 6.11.0, <= 6.11.1|6.11.2|
|>= 6.12.0, <= 6.12.4|6.12.5|
|>= 6.14.0, <= 6.14.2|6.14.3|
|>= 7.0.0, <= 7.0.2|7.0.3|
|7.3.0|7.3.1|

#### .NET SDK

* .NET 8.0.126 SDK
* .NET 8.0.420 SDK
* .NET 9.0.116 SDK
* .NET 9.0.313 SDK
* .NET 10.0.106 SDK
* .NET 10.0.202 SDK

### Workarounds
N/A

### References
https://github.com/NuGet/NuGetGallery/security/advisories/GHSA-9r3h-v4hx-rhfr

### Credit
[splitline](https://x.com/_splitline_) with [DEVCORE](https://devco.re/)
Vulnerability type
CWE-345
Published: 14 Apr 2026 · Updated: 15 Apr 2026 · First seen: 15 Apr 2026