Defense in Depth update for NuGet Client

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

not scored

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

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 with DEVCORE

Published by the source

14 Apr 2026, 23:42 UTC

Last modified by the source

14 Apr 2026, 23:42 UTC

Source last checked

26 Oct 2026, 17:04 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-g4vj-cjjj-v7hg

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# Patch Next advisory brief: GHSA-g4vj-cjjj-v7hg

Advisory: Defense in Depth update for NuGet Client
IDs: GHSA-g4vj-cjjj-v7hg
Record: https://patchnext.com/advisories/ghsa-g4vj-cjjj-v7hg (revision 1, source checked 26 Oct 2026, 17:04 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: nuget.commandline 7.3.1, 7.0.3, 6.14.3, 6.12.5, 6.11.2, 6.8.2, 5.11.7, 4.9.7; nuget.packaging 7.3.1, 7.0.3, 6.14.3, 6.12.5, 6.11.2, 6.8.2, 5.11.7, 4.9.7; nuget.protocol 7.3.1, 7.0.3, 6.14.3, 6.12.5, 6.11.2, 6.8.2, 5.11.7, 4.9.7. A vendor fix does not mean a deployment is fixed.

## Affected components
- NuGet nuget.commandline: affected >= 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, <= 7.3.0; fixed in 5.11.7, 6.14.3, 6.11.2, 6.12.5, 7.3.1, 6.8.2, 4.9.7, 7.0.3
- NuGet nuget.packaging: affected >= 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, <= 7.3.0; fixed in 5.11.7, 6.14.3, 6.11.2, 6.12.5, 7.3.1, 6.8.2, 4.9.7, 7.0.3
- NuGet nuget.protocol: affected >= 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, <= 7.3.0; fixed in 5.11.7, 6.14.3, 6.11.2, 6.12.5, 7.3.1, 6.8.2, 4.9.7, 7.0.3

## Suggested inspection (read-only)
- NuGet nuget.commandline: check the installed version with your package manager.
- NuGet nuget.packaging: check the installed version with your package manager.
- NuGet nuget.protocol: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on nuget.commandline, nuget.packaging, nuget.protocol.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-g4vj-cjjj-v7hg (GitHub-reviewed advisory GHSA-g4vj-cjjj-v7hg lists affected ranges: NuGet nuget.packaging >=4.9.0 =5.11.0 =6.8.0 =6.11.0 =6.12.0 =6.14.0 =7.0.0 =7.3.0 =4.9.0 =5.11.0 =6.8.0 =6.11.0 =6.12.0 =6.14.0 =7.0.0 =7.3.0 =4.9.0 =5.11.0 =6.8.0 =6.11.0 <=6.11.1,…)

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