ALAS2023-2026-3249: Security update for 20 packages

ALAS2023-2026-3249, released November 7, 2026, fixes 2 CVEs across 20 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.4

Base score, 0 to 10

Highest EPSS

0.0094

61st percentile

Priority of the 2 CVEs

Patch now 0
                                Urgent 0
                                High 2
                                Routine 0

Fixed package versions

Product	Release	Fixed in
aspnetcore-runtime-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
aspnetcore-runtime-dbg-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
aspnetcore-targeting-pack-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-apphost-pack-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-apphost-pack-10.0-debuginfo	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-hostfxr-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-hostfxr-10.0-debuginfo	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-runtime-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-runtime-10.0-debuginfo	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-runtime-dbg-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-sdk-10.0	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet-sdk-10.0-debuginfo	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet-sdk-10.0-source-built-artifacts	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet-sdk-aot-10.0	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet-sdk-aot-10.0-debuginfo	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet-sdk-dbg-10.0	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet-targeting-pack-10.0	amzn 2023	10.0.13-1.amzn2023.0.1
dotnet-templates-10.0	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet10.0-debuginfo	amzn 2023	10.0.113-1.amzn2023.0.1
dotnet10.0-debugsource	amzn 2023	10.0.113-1.amzn2023.0.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-70188	ASP.NET Core Security Feature Bypass Vulnerability	9.4	0.0094	Exploitation Less Likely
High	CVE-2026-88092	ASP.NET Core Tampering Vulnerability	9.4	0.0093	Exploitation Less Likely

Also fixes CVE-2026-70188

KB5130035
.NET 9.0 runtime installed on Linux, .NET 9.0 runtime installed on Mac OS, .NET 9.0 runtime installed on Windows and 1 more
KB5130034
.NET 8.0 runtime installed on Linux, .NET 8.0 runtime installed on Mac OS, .NET 8.0 runtime installed on Windows and 1 more
ALSA-2026:86193
aspnetcore-runtime-10.0, aspnetcore-runtime-dbg-10.0, aspnetcore-targeting-pack-10.0 and 11 more on almalinux 9
ALSA-2026:86192
aspnetcore-runtime-10.0, aspnetcore-runtime-dbg-10.0, aspnetcore-targeting-pack-10.0 and 11 more on almalinux 8
ALSA-2026:86195
aspnetcore-runtime-10.0, aspnetcore-runtime-dbg-10.0, aspnetcore-targeting-pack-10.0 and 11 more on almalinux 10
RHSA-2026:86193
aspnetcore-runtime-10.0, aspnetcore-runtime-dbg-10.0, aspnetcore-targeting-pack-10.0 and 11 more on RHEL 9
RHSA-2026:86195
dotnet10.0 on RHEL 10
RHSA-2026:86192
aspnetcore-runtime-10.0, aspnetcore-runtime-dbg-10.0, aspnetcore-targeting-pack-10.0 and 11 more on RHEL 8

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-3249.html

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