CVE-2026-66822
Fixed in a distro release EPSS <1%CVSS 5.9
Insertion of sensitive information into sent data in .NET allows an unauthorized attacker to disclose information over a network.
Products: Microsoft .NET 10.0 runtime, Microsoft .NET 11.0 runtime, Microsoft .NET 8.0 runtime, Microsoft .NET 9.0 runtime, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-arm64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-arm64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-x64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-x64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-x64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-musl-x64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-x64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-x64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-x64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.linux-x64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-arm64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-arm64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-arm64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-arm64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-x64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-x64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-x64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.osx-x64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 8.0.32 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | aspnetcore-runtime-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | aspnetcore-runtime-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | aspnetcore-runtime-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | aspnetcore-runtime-dbg-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | aspnetcore-runtime-dbg-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | aspnetcore-runtime-dbg-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | aspnetcore-targeting-pack-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | aspnetcore-targeting-pack-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | aspnetcore-targeting-pack-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | dotnet-apphost-pack-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | dotnet-apphost-pack-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-apphost-pack-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | dotnet-host | 10.0.13-1.el10_2 |
| AlmaLinux 10 | dotnet-hostfxr-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | dotnet-hostfxr-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-hostfxr-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-dbg-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-dbg-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-dbg-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-10.0 | 10.0.113-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-10.0-source-built-artifacts | 10.0.113-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-8.0 | 8.0.132-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-8.0-source-built-artifacts | 8.0.132-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-9.0 | 9.0.122-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-9.0-source-built-artifacts | 9.0.122-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-aot-10.0 | 10.0.113-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-aot-9.0 | 9.0.122-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-dbg-10.0 | 10.0.113-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-dbg-8.0 | 8.0.132-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-dbg-9.0 | 9.0.122-1.el10_2 |
| AlmaLinux 10 | dotnet-targeting-pack-10.0 | 10.0.13-1.el10_2 |
| AlmaLinux 10 | dotnet-targeting-pack-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-targeting-pack-9.0 | 9.0.21-1.el10_2 |
| AlmaLinux 10 | dotnet-templates-10.0 | 10.0.113-1.el10_2 |
| AlmaLinux 10 | dotnet-templates-8.0 | 8.0.132-1.el10_2 |
| AlmaLinux 10 | dotnet-templates-9.0 | 9.0.122-1.el10_2 |
| AlmaLinux 10 | netstandard-targeting-pack-2.1 | 9.0.122-1.el10_2 |
| AlmaLinux 8 | aspnetcore-runtime-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | aspnetcore-runtime-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | aspnetcore-runtime-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | aspnetcore-runtime-dbg-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | aspnetcore-runtime-dbg-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | aspnetcore-runtime-dbg-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | aspnetcore-targeting-pack-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | aspnetcore-targeting-pack-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | aspnetcore-targeting-pack-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | dotnet | 10.0.113-1.el8_10 |
| AlmaLinux 8 | dotnet-apphost-pack-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | dotnet-apphost-pack-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-apphost-pack-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | dotnet-hostfxr-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | dotnet-hostfxr-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-hostfxr-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | dotnet-runtime-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | dotnet-runtime-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-runtime-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | dotnet-runtime-dbg-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | dotnet-runtime-dbg-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-runtime-dbg-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-10.0 | 10.0.113-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-10.0-source-built-artifacts | 10.0.113-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-8.0 | 8.0.132-2.el8_10 |
| AlmaLinux 8 | dotnet-sdk-8.0-source-built-artifacts | 8.0.132-2.el8_10 |
| AlmaLinux 8 | dotnet-sdk-9.0 | 9.0.122-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-9.0-source-built-artifacts | 9.0.122-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-aot-10.0 | 10.0.113-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-aot-9.0 | 9.0.122-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-dbg-10.0 | 10.0.113-1.el8_10 |
| AlmaLinux 8 | dotnet-sdk-dbg-8.0 | 8.0.132-2.el8_10 |
| AlmaLinux 8 | dotnet-sdk-dbg-9.0 | 9.0.122-1.el8_10 |
| AlmaLinux 8 | dotnet-targeting-pack-10.0 | 10.0.13-1.el8_10 |
| AlmaLinux 8 | dotnet-targeting-pack-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-targeting-pack-9.0 | 9.0.21-1.el8_10 |
| AlmaLinux 8 | dotnet-templates-10.0 | 10.0.113-1.el8_10 |
| AlmaLinux 8 | dotnet-templates-8.0 | 8.0.132-2.el8_10 |
| AlmaLinux 8 | dotnet-templates-9.0 | 9.0.122-1.el8_10 |
| AlmaLinux 8 | netstandard-targeting-pack-2.1 | 9.0.122-1.el8_10 |
| AlmaLinux 9 | aspnetcore-runtime-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | aspnetcore-runtime-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | aspnetcore-runtime-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | aspnetcore-runtime-dbg-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | aspnetcore-runtime-dbg-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | aspnetcore-runtime-dbg-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | aspnetcore-targeting-pack-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | aspnetcore-targeting-pack-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | aspnetcore-targeting-pack-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | dotnet-apphost-pack-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | dotnet-apphost-pack-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-apphost-pack-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | dotnet-host | 10.0.13-1.el9_8 |
| AlmaLinux 9 | dotnet-hostfxr-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | dotnet-hostfxr-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-hostfxr-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-dbg-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-dbg-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-dbg-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-10.0 | 10.0.113-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-10.0-source-built-artifacts | 10.0.113-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-8.0 | 8.0.132-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-8.0-source-built-artifacts | 8.0.132-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-9.0 | 9.0.122-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-9.0-source-built-artifacts | 9.0.122-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-aot-10.0 | 10.0.113-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-aot-9.0 | 9.0.122-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-dbg-10.0 | 10.0.113-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-dbg-8.0 | 8.0.132-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-dbg-9.0 | 9.0.122-1.el9_8 |
| AlmaLinux 9 | dotnet-targeting-pack-10.0 | 10.0.13-1.el9_8 |
| AlmaLinux 9 | dotnet-targeting-pack-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-targeting-pack-9.0 | 9.0.21-1.el9_8 |
| AlmaLinux 9 | dotnet-templates-10.0 | 10.0.113-1.el9_8 |
| AlmaLinux 9 | dotnet-templates-8.0 | 8.0.132-1.el9_8 |
| AlmaLinux 9 | dotnet-templates-9.0 | 9.0.122-1.el9_8 |
| AlmaLinux 9 | netstandard-targeting-pack-2.1 | 9.0.122-1.el9_8 |
| Chainguard | dotnet-bootstrap-8 | no fix |
| Chainguard | dotnet-bootstrap-9 | no fix |
| Red Hat hummingbird 1 | aspnetcore-runtime-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-runtime-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-runtime-dbg-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-runtime-dbg-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-targeting-pack-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-targeting-pack-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-apphost-pack-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-apphost-pack-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-hostfxr-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-hostfxr-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-dbg-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-dbg-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-10.0 | 0:10.0.113-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-10.0-source-built-artifacts | 0:10.0.113-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-8.0 | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-8.0-source-built-artifacts | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-9.0 | 0:9.0.122-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-9.0-source-built-artifacts | 0:9.0.122-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-aot-10.0 | 0:10.0.113-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-aot-9.0 | 0:9.0.122-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-dbg-10.0 | 0:10.0.113-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-dbg-8.0 | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-dbg-9.0 | 0:9.0.122-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-targeting-pack-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-targeting-pack-9.0 | 0:9.0.21-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-templates-10.0 | 0:10.0.113-1.hum1 |
| Red Hat hummingbird 1 | dotnet-templates-8.0 | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-templates-9.0 | 0:9.0.122-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet10.0 | 0:10.0.113-1.hum1 |
| Red Hat hummingbird 1 | dotnet8.0 | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet9.0 | 0:9.0.122-0.1.hum1 |
| Red Hat hummingbird 1 | netstandard-targeting-pack-2.1 | 0:9.0.122-0.1.hum1 |
| Rocky Linux 10 | dotnet10.0 | 0:10.0.113-1.el10_2 |
| Rocky Linux 10 | dotnet8.0 | 0:8.0.132-1.el10_2 |
| Rocky Linux 10 | dotnet9.0 | 0:9.0.122-1.el10_2 |
| Rocky Linux 8 | dotnet10.0 | 0:10.0.113-1.el8_10 |
| Rocky Linux 8 | dotnet8.0 | 0:8.0.132-2.el8_10 |
| Rocky Linux 8 | dotnet9.0 | 0:9.0.122-1.el8_10 |
| Rocky Linux 9 | dotnet10.0 | 0:10.0.113-1.el9_8 |
| Rocky Linux 9 | dotnet8.0 | 0:8.0.132-1.el9_8 |
| Rocky Linux 9 | dotnet9.0 | 0:9.0.122-1.el9_8 |
| Ubuntu 22.04 LTS | dotnet6 | no fix |
| Ubuntu 22.04 LTS | dotnet7 | no fix |
| Ubuntu 22.04 LTS | dotnet8 | 8.0.132-8.0.32-0ubuntu1~22.04.1 |
| Ubuntu 24.04 LTS | dotnet10 | 10.0.113-10.0.13-0ubuntu1~24.04.1 |
| Ubuntu 24.04 LTS | dotnet8 | 8.0.132-8.0.32-0ubuntu1~24.04.1 |
| Ubuntu 26.04 LTS | dotnet10 | 10.0.113-10.0.13-0ubuntu1~26.04.1 |
| Ubuntu 26.10 | dotnet10 | 10.0.113-10.0.13-0ubuntu1~26.10.1 |
| Ubuntu 26.10 | dotnet11 | 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1 |
| Wolfi | dotnet-bootstrap-8 | no fix |
| Wolfi | dotnet-bootstrap-9 | no fix |