Impact

A denial of service vulnerability exists in how YARP processes input.

Patches

If you're using YARP 1.0.0, you should update to NuGet package version 1.0.1.
If you're using YARP 1.1.0-RC.1, you should update to NuGet package version 1.1.0-rc.1.22211.2.

You can do so by updating the PackageReference in your .csproj file

<ItemGroup>
- <PackageReference Include="Yarp.ReverseProxy" Version="1.0.0" />
- <PackageReference Include="Yarp.Telemetry.Consumption" Version="1.0.0" />
+ <PackageReference Include="Yarp.ReverseProxy" Version="1.0.1" />
+ <PackageReference Include="Yarp.Telemetry.Consumption" Version="1.0.1" />
</ItemGroup>

or by selecting 1.0.1 in the NuGet UI inside Visual Studio (Manage NuGet Packages / Updates)

References

CVE-2022-26924