ALSA-2026:99052: Important: .NET 8.0 security, bug fix, and enhancement update

Published Nov 11, 2026
·
Updated

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 8.0.134 Runtime version: 8.0.34

Security Fix(es):

dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-109478) dotnet8.0: dotnet11.0: dotnet9.0: dotnet10.0: ASP.NET Core Information Disclosure Vulnerability (CVE-2026-109476) dotnet11.0: dotnet10.0: dotnet9.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-105544) dotnet8.0: dotnet9.0: dotnet11.0: dotnet10.0: .NET Denial of Service Vulnerability (CVE-2026-109475) dotnet9.0: dotnet11.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-114146) dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-114147) dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-114149)

Bug Fix(es) and Enhancement(s):

Update .NET 8.0 to SDK 8.0.134 and Runtime 8.0.34 (JIRA:RHEL-302533)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

12 affected componentsFixes available
almalinux/aspnetcore-runtime-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/aspnetcore-runtime-dbg-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/aspnetcore-targeting-pack-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/dotnet-apphost-pack-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/dotnet-hostfxr-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/dotnet-runtime-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/dotnet-runtime-dbg-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/dotnet-sdk-8.0<8.0.134-1.el8_10
8.0.134-1.el8_10
almalinux/dotnet-sdk-8.0-source-built-artifacts<8.0.134-1.el8_10
8.0.134-1.el8_10
almalinux/dotnet-sdk-dbg-8.0<8.0.134-1.el8_10
8.0.134-1.el8_10
almalinux/dotnet-targeting-pack-8.0<8.0.34-1.el8_10
8.0.34-1.el8_10
almalinux/dotnet-templates-8.0<8.0.134-1.el8_10
8.0.134-1.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade almalinux/aspnetcore-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  2. Upgrade

    Upgrade almalinux/aspnetcore-runtime-dbg-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  3. Upgrade

    Upgrade almalinux/aspnetcore-targeting-pack-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  4. Upgrade

    Upgrade almalinux/dotnet-apphost-pack-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  5. Upgrade

    Upgrade almalinux/dotnet-hostfxr-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  6. Upgrade

    Upgrade almalinux/dotnet-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  7. Upgrade

    Upgrade almalinux/dotnet-runtime-dbg-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  8. Upgrade

    Upgrade almalinux/dotnet-sdk-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.134-1.el8_10
  9. Upgrade

    Upgrade almalinux/dotnet-sdk-8.0-source-built-artifacts to a version that resolves this vulnerability.

    Fixed in 8.0.134-1.el8_10
  10. Upgrade

    Upgrade almalinux/dotnet-sdk-dbg-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.134-1.el8_10
  11. Upgrade

    Upgrade almalinux/dotnet-targeting-pack-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.34-1.el8_10
  12. Upgrade

    Upgrade almalinux/dotnet-templates-8.0 to a version that resolves this vulnerability.

    Fixed in 8.0.134-1.el8_10
  13. Upgrade

    Upgrade .NET SDK to a version that resolves this vulnerability.

    Fixed in 8.0.134
  14. Upgrade

    Upgrade .NET Runtime to a version that resolves this vulnerability.

    Fixed in 8.0.34

Event History

Nov 11, 2026
Advisory Published
via OSV·12:00 AM
Data Sourced
via OSV·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

Which installed components should be included in the update inventory?

The advisory covers almalinux/aspnetcore-runtime-8.0, almalinux/aspnetcore-runtime-dbg-8.0, almalinux/aspnetcore-targeting-pack-8.0, almalinux/dotnet-apphost-pack-8.0, almalinux/dotnet-hostfxr-8.0, almalinux/dotnet-runtime-8.0, almalinux/dotnet-runtime-dbg-8.0, and almalinux/dotnet-sdk-8.0.

2

What updated .NET versions are identified by the advisory?

The advisory identifies SDK version 8.0.134 and runtime version 8.0.34. These versions should be used when validating the updated SDK and runtime installation.

3

What types of security issues are addressed?

The listed fixes include ASP.NET Core denial-of-service and information-disclosure issues, plus .NET elevation-of-privilege and denial-of-service issues. The advisory also lists an ASP.NET Core elevation-of-privilege vulnerability.

Company

Resources

Contact

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