A denial of service vulnerability exists in how YARP processes input.
If you're using YARP 1.0.0, you should update to NuGet package version <code>1.0.1</code>.
If you're using YARP 1.1.0-RC.1, you should update to NuGet package version <code>1.1.0-rc.1.22211.2</code>.
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)

{
"github_reviewed": true,
"severity": "HIGH",
"cwe_ids": [],
"nvd_published_at": "2022-04-15T19:15:00Z",
"github_reviewed_at": "2022-04-22T20:23:44Z"
}