ALSA-2026:86594: Critical: .NET 8.0 security, bug fix, and enhancement update

Published Oct 21, 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: 8.0.132 Runtime version: 8.0.32

Security Fix(es):

dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280) dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822) dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651) dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159) dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175) dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179) dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181) dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183) dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186) dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188) dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196) dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092) dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707) dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability (CVE-2026-96222) dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225) dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230) dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231) dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233) dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236) dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237) dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238)

Bug Fix(es) and Enhancement(s):

Update .NET 8.0 to SDK 8.0.132 and Runtime 8.0.32 (JIRA:AlmaLinux-277790)

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<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/aspnetcore-runtime-dbg-8.0<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/aspnetcore-targeting-pack-8.0<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/dotnet-apphost-pack-8.0<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/dotnet-hostfxr-8.0<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/dotnet-runtime-8.0<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/dotnet-runtime-dbg-8.0<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/dotnet-sdk-8.0<8.0.132-2.el8_10
8.0.132-2.el8_10
almalinux/dotnet-sdk-8.0-source-built-artifacts<8.0.132-2.el8_10
8.0.132-2.el8_10
almalinux/dotnet-sdk-dbg-8.0<8.0.132-2.el8_10
8.0.132-2.el8_10
almalinux/dotnet-targeting-pack-8.0<8.0.32-2.el8_10
8.0.32-2.el8_10
almalinux/dotnet-templates-8.0<8.0.132-2.el8_10
8.0.132-2.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 8.0.32-2.el8_10
  2. Upgrade

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

    Fixed in 8.0.32-2.el8_10
  3. Upgrade

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

    Fixed in 8.0.32-2.el8_10
  4. Upgrade

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

    Fixed in 8.0.32-2.el8_10
  5. Upgrade

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

    Fixed in 8.0.32-2.el8_10
  6. Upgrade

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

    Fixed in 8.0.32-2.el8_10
  7. Upgrade

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

    Fixed in 8.0.32-2.el8_10
  8. Upgrade

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

    Fixed in 8.0.132-2.el8_10
  9. Upgrade

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

    Fixed in 8.0.132-2.el8_10
  10. Upgrade

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

    Fixed in 8.0.132-2.el8_10
  11. Upgrade

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

    Fixed in 8.0.32-2.el8_10
  12. Upgrade

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

    Fixed in 8.0.132-2.el8_10
  13. Upgrade

    Upgrade .NET 8.0 SDK to a version that resolves this vulnerability.

    Fixed in 8.0.132
  14. Upgrade

    Upgrade .NET 8.0 Runtime to a version that resolves this vulnerability.

    Fixed in 8.0.32

Event History

Oct 21, 2026
Advisory Published
via OSV·12:00 AM
Data Sourced
via OSV·12:00 AM
DescriptionAffected Software

Contact

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