Summary
.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.
New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 10.0.109 and .NET Runtime 10.0.9.Security Fix(es):
* dotnet: .NET: Local file tampering via link following vulnerability (CVE-2026-45491)
* dotnet: ASP.NET Core: Denial of Service via uncontrolled resource consumption (CVE-2026-45591)
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.
Fixed packages 15
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | aspnetcore-runtime-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | aspnetcore-runtime-dbg-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | aspnetcore-targeting-pack-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | dotnet | 10.0.109-1.el8_10 |
| AlmaLinux · 8 | dotnet-apphost-pack-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | dotnet-host | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | dotnet-hostfxr-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | dotnet-runtime-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | dotnet-runtime-dbg-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | dotnet-sdk-10.0 | 10.0.109-1.el8_10 |
| AlmaLinux · 8 | dotnet-sdk-10.0-source-built-artifacts | 10.0.109-1.el8_10 |
| AlmaLinux · 8 | dotnet-sdk-aot-10.0 | 10.0.109-1.el8_10 |
| AlmaLinux · 8 | dotnet-sdk-dbg-10.0 | 10.0.109-1.el8_10 |
| AlmaLinux · 8 | dotnet-targeting-pack-10.0 | 10.0.9-1.el8_10 |
| AlmaLinux · 8 | dotnet-templates-10.0 | 10.0.109-1.el8_10 |
Vulnerabilities 2
-
High 7.5
ASP.NET Core Denial of Service Vulnerability
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
-
Medium 6.2
.NET Tampering Vulnerability
Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.