CVE-2026-69304
Fixed in a distro release EPSS <1%CVSS 5.9
Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Products: Microsoft .NET 10.0, Microsoft .NET 8.0, Microsoft .NET 9.0, Microsoft ASP.NET Core 10.0, Microsoft ASP.NET Core 11.0, Microsoft ASP.NET Core 8.0, Microsoft ASP.NET Core 9.0, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.9
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| NuGet | Microsoft.AspNetCore.Server.IISIntegration | 11.0.0-rc.1 |
| NuGet | Microsoft.AspNetCore.Server.IISIntegration | 8.0.31 |
| NuGet | Microsoft.AspNetCore.Server.IISIntegration | 9.0.20 |
| NuGet | Microsoft.AspNetCore.Server.IISIntegration | 10.0.12 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | aspnet-8-targeting-pack | 8.0.131-r0 |
| Chainguard | dotnet-bootstrap-8 | 8.0.132-r0 |
| Chainguard | dotnet-bootstrap-9 | 9.0.122-r0 |
| Red Hat hummingbird 1 | aspnetcore-runtime-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | aspnetcore-runtime-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-runtime-dbg-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | aspnetcore-runtime-dbg-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-targeting-pack-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | aspnetcore-targeting-pack-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-apphost-pack-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-apphost-pack-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-hostfxr-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-hostfxr-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-dbg-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-dbg-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-10.0 | 0:10.0.112-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-10.0-source-built-artifacts | 0:10.0.112-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-8.0 | 0:8.0.130-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-8.0-source-built-artifacts | 0:8.0.130-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-9.0 | 0:9.0.119-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-9.0-source-built-artifacts | 0:9.0.119-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-aot-10.0 | 0:10.0.112-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-aot-9.0 | 0:9.0.119-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-dbg-10.0 | 0:10.0.112-1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-dbg-8.0 | 0:8.0.130-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-dbg-9.0 | 0:9.0.119-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-targeting-pack-8.0 | 0:8.0.30-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-targeting-pack-9.0 | 0:9.0.18-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet-templates-10.0 | 0:10.0.112-1.hum1 |
| Red Hat hummingbird 1 | dotnet-templates-8.0 | 0:8.0.130-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet-templates-9.0 | 0:9.0.119-2.1.hum1 |
| Red Hat hummingbird 1 | dotnet10.0 | 0:10.0.112-1.hum1 |
| Red Hat hummingbird 1 | dotnet8.0 | 0:8.0.130-0.2.hum1 |
| Red Hat hummingbird 1 | dotnet9.0 | 0:9.0.119-2.1.hum1 |
| Red Hat hummingbird 1 | netstandard-targeting-pack-2.1 | 0:9.0.119-2.1.hum1 |
| Ubuntu 22.04 LTS | dotnet7 | no fix |
| Wolfi | aspnet-8-targeting-pack | 8.0.131-r0 |
| Wolfi | dotnet-bootstrap-8 | 8.0.132-r0 |
| Wolfi | dotnet-bootstrap-9 | 9.0.122-r0 |