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.NET NuGet

GHSA-g4vj-cjjj-v7hg

Defense in Depth update for NuGet Client

Published
Apr 14, 2026
Updated
Apr 17, 2026
Affected
24 pkgs
Patched
24 / 24
Exploits
None indexed

Blast Radius

24 pkgs affected
.NETNuGet.Packaging.NETNuGet.Packaging.NETNuGet.Packaging.NETNuGet.Packaging.NETNuGet.Packaging.NETNuGet.Packaging.NETNuGet.Packaging.NETNuGet.Packaging+16 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

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 versionsPatched version
>= 4.9.0, <= 4.9.64.9.7
>= 5.11.0, <= 5.11.65.11.7
>= 6.8.0, <= 6.8.16.8.2
>= 6.11.0, <= 6.11.16.11.2
>= 6.12.0, <= 6.12.46.12.5
>= 6.14.0, <= 6.14.26.14.3
>= 7.0.0, <= 7.0.27.0.3
7.3.07.3.1

.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

Affected Packages

24 total 24 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetNuGet.Packaging4.9.0&&< 4.9.74.9.7
.NETNuGetNuGet.Packaging5.11.0&&< 5.11.75.11.7
.NETNuGetNuGet.Packaging6.8.0&&< 6.8.26.8.2
.NETNuGetNuGet.Packaging6.11.0&&< 6.11.26.11.2
.NETNuGetNuGet.Packaging6.12.0&&< 6.12.56.12.5
.NETNuGetNuGet.Packaging6.14.0&&< 6.14.36.14.3

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for NuGet.Packaging. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update NuGet.Packaging to 4.9.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-g4vj-cjjj-v7hg is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-g4vj-cjjj-v7hg is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-g4vj-cjjj-v7hg. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### 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
O3 Security · Impact-Aware SCA

Is GHSA-g4vj-cjjj-v7hg in your dependencies?

O3 detects GHSA-g4vj-cjjj-v7hg across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.