Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-223
Advisory Released Date: 2026-10-21
Advisory Updated Date: 2026-11-02
Severity:
Critical
Issue Overview:
Package updates are available for Amazon Linux 2027 that fix the following vulnerabilities:
CVE-2026-88092:
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.
CVE-2026-70188:
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.
Affected Packages:
dotnet10.0
Issue Correction:
Run dnf update dotnet10.0 --releasever 2027.0.20261021 or dnf update --advisory ALAS2027-2026-223 --releasever 2027.0.20261021 to update your system.
New Packages:
aarch64:
aspnetcore-runtime-dbg-10.0-10.0.13-1.amzn2027.0.1.aarch64
dotnet-hostfxr-10.0-debuginfo-10.0.13-1.amzn2027.0.1.aarch64
dotnet-sdk-10.0-debuginfo-10.0.113-1.amzn2027.0.1.aarch64
dotnet-hostfxr-10.0-10.0.13-1.amzn2027.0.1.aarch64
aspnetcore-runtime-10.0-10.0.13-1.amzn2027.0.1.aarch64
dotnet-templates-10.0-10.0.113-1.amzn2027.0.1.aarch64
dotnet-sdk-dbg-10.0-10.0.113-1.amzn2027.0.1.aarch64
dotnet-10.0.113-1.amzn2027.0.1.aarch64
aspnetcore-targeting-pack-10.0-10.0.13-1.amzn2027.0.1.aarch64
dotnet-runtime-10.0-10.0.13-1.amzn2027.0.1.aarch64
dotnet-sdk-aot-10.0-debuginfo-10.0.113-1.amzn2027.0.1.aarch64
dotnet-apphost-pack-10.0-10.0.13-1.amzn2027.0.1.aarch64
dotnet-targeting-pack-10.0-10.0.13-1.amzn2027.0.1.aarch64
dotnet-runtime-10.0-debuginfo-10.0.13-1.amzn2027.0.1.aarch64
dotnet-runtime-dbg-10.0-10.0.13-1.amzn2027.0.1.aarch64
dotnet-sdk-aot-10.0-10.0.113-1.amzn2027.0.1.aarch64
dotnet10.0-debugsource-10.0.113-1.amzn2027.0.1.aarch64
dotnet-sdk-10.0-10.0.113-1.amzn2027.0.1.aarch64
dotnet-apphost-pack-10.0-debuginfo-10.0.13-1.amzn2027.0.1.aarch64
dotnet-sdk-10.0-source-built-artifacts-10.0.113-1.amzn2027.0.1.aarch64
dotnet-host-10.0.13-1.amzn2027.0.1.aarch64
dotnet-host-debuginfo-10.0.13-1.amzn2027.0.1.aarch64
src:
dotnet10.0-10.0.113-1.amzn2027.0.1.src
x86_64:
dotnet-sdk-dbg-10.0-10.0.113-1.amzn2027.0.1.x86_64
dotnet-sdk-10.0-source-built-artifacts-10.0.113-1.amzn2027.0.1.x86_64
dotnet-host-debuginfo-10.0.13-1.amzn2027.0.1.x86_64
dotnet-sdk-10.0-debuginfo-10.0.113-1.amzn2027.0.1.x86_64
dotnet-runtime-10.0-debuginfo-10.0.13-1.amzn2027.0.1.x86_64
dotnet-10.0.113-1.amzn2027.0.1.x86_64
aspnetcore-runtime-10.0-10.0.13-1.amzn2027.0.1.x86_64
dotnet-hostfxr-10.0-debuginfo-10.0.13-1.amzn2027.0.1.x86_64
dotnet-runtime-dbg-10.0-10.0.13-1.amzn2027.0.1.x86_64
aspnetcore-targeting-pack-10.0-10.0.13-1.amzn2027.0.1.x86_64
dotnet-apphost-pack-10.0-debuginfo-10.0.13-1.amzn2027.0.1.x86_64
dotnet-templates-10.0-10.0.113-1.amzn2027.0.1.x86_64
aspnetcore-runtime-dbg-10.0-10.0.13-1.amzn2027.0.1.x86_64
dotnet-sdk-aot-10.0-debuginfo-10.0.113-1.amzn2027.0.1.x86_64
dotnet-host-10.0.13-1.amzn2027.0.1.x86_64
dotnet-targeting-pack-10.0-10.0.13-1.amzn2027.0.1.x86_64
dotnet-hostfxr-10.0-10.0.13-1.amzn2027.0.1.x86_64
dotnet-apphost-pack-10.0-10.0.13-1.amzn2027.0.1.x86_64
dotnet-sdk-aot-10.0-10.0.113-1.amzn2027.0.1.x86_64
dotnet-runtime-10.0-10.0.13-1.amzn2027.0.1.x86_64
dotnet10.0-debugsource-10.0.113-1.amzn2027.0.1.x86_64
dotnet-sdk-10.0-10.0.113-1.amzn2027.0.1.x86_64