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CVE-2026-70183

NuGet · Microsoft.AspNetCore.App.Runtime.linux-arm

Summary

Microsoft Security Advisory CVE-2026-70183 - ASP.NET Core Security Feature Bypass Vulnerability

Advisory details

Executive summary

Microsoft is releasing this security advisory to provide information about a vulnerability in Microsoft.AspNetCore.Components.Authorization. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

A stale asynchronous authorization result in Blazor AuthorizeRouteView can be applied after navigation or an authorization-state change, bypassing the current [Authorize] decision.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/460

CVSS Details

  • Version: 3.1
  • Severity: High
  • Score: 7.5
  • Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'))

Affected Platforms

  • Platforms: Windows, Linux, macOS
  • Architectures: All

Affected Packages

The vulnerability affects Microsoft .NET projects that use an affected package version listed below.

Package name Affected version Patched version
Microsoft.AspNetCore.App.Runtime.linux-arm >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.linux-arm64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.linux-musl-arm >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.linux-x64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.osx-arm64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.osx-x64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.win-arm >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.win-arm64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.win-x64 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.win-x86 >= 8.0.0, <= 8.0.31 8.0.32
Microsoft.AspNetCore.App.Runtime.linux-arm >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.linux-arm64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.linux-musl-arm >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.linux-x64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.osx-arm64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.osx-x64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.win-arm >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.win-arm64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.win-x64 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.win-x86 >= 10.0.0, <= 10.0.12 10.0.13
Microsoft.AspNetCore.App.Runtime.linux-arm >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.linux-arm64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.linux-musl-arm >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.linux-x64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.osx-arm64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.osx-x64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.win-arm >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.win-arm64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.win-x64 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.win-x86 >= 9.0.0, <= 9.0.20 9.0.21
Microsoft.AspNetCore.App.Runtime.linux-arm >= 11.0.0-preview.1, <= 11.0.0-rc.1 11.0.0-rc.2
Microsoft.AspNetCore.App.Runtime.linux-arm64 >= 11.0.0-preview.1, <= 11.0.0-rc.1 11.0.0-rc.2
Microsoft.AspNetCore.App.Runtime.linux-musl-arm >= 11.0.0-preview.1, <= 11.0.0-rc.1 11.0.0-rc.2
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 >= 11.0.0-preview.1, <= 11.0.0-rc.1 11.0.0-rc.2
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 >= 11.0.0-preview.1, <= 11.0.0-rc.1 11.0.0-rc.2
Microsoft.AspNetCore.App.Runtime.linux-x64 >= 11.0.0-preview.1, <= 11.0.0-rc.1 11.0.0-rc.2
Microsoft.AspNetCore.App.Runtime.osx-arm64 >= 11.0.0-preview.1, <= 11.0.0-rc.1 11.0.0-rc.2
[Microsoft.AspNetCore.App.Runtime.osx

References

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