{"id":"CVE-2026-70183","kind":"vulnerability","aliases":["CVE-2026-70183","GHSA-494h-xx7x-5frh"],"related":[],"title":"Microsoft Security Advisory CVE-2026-70183 - ASP.NET Core Security Feature Bypass Vulnerability","description":"## Executive summary\n\nMicrosoft 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.\n\nA stale asynchronous authorization result in Blazor `AuthorizeRouteView` can be applied after navigation or an authorization-state change, bypassing the current `[Authorize]` decision.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/460\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 7.5\n- **Vector:** `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'))\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS\n- **Architectures:** All\n\n## <a name=\"affected-packages\"></a>Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\n[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86) | >= 8.0.0, <= 8.0.31 | 8.0.32\n[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86) | >= 10.0.0, <= 10.0.12 | 10.0.13\n[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86) | >= 9.0.0, <= 9.0.20 | 9.0.21\n[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86) | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2\n\n## Advisory FAQ\n\n### <a name=\"how-affected\"></a>How do I know if I am affected?\n\nIf using a package listed in [affected packages](#affected-packages), you're exposed to the vulnerability.\n\n### <a name=\"how-fix\"></a>How do I fix the issue?\n\n1. To fix the issue please install the latest version of .NET. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.\n2. If your application references the vulnerable package, update the package reference to the patched version. You can list the versions you have installed by running the `dotnet --info` command.\n\nOnce you have installed the updated runtime or SDK, restart your apps for the update to take effect.\n\nAdditionally, if you've deployed [self-contained applications](https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd) targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n## Other Information\n\n### Reporting Security Issues\n\nIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the [MSRC Researcher Portal](https://msrc.microsoft.com/report/vulnerability/new). Further information can be found in the MSRC [Report an Issue FAQ](https://www.microsoft.com/msrc/faqs-report-an-issue).\n\nSecurity reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.\n\n### Support\n\nYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.\n\n### Disclaimer\n\nThe information provided in this advisory is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.\n\n### External Links\n\n[CVE-2026-70183](https://www.cve.org/CVERecord?id=CVE-2026-70183)\n\n### Acknowledgements\n\n- l8BL with ENKI WhiteHat (https://enki.co.kr/)\n\n### Revisions\n\nV1.0 (10/13/2026): Advisory published.","summary":"ASP.NET Core Blazor AuthorizeRouteView can apply a stale asynchronous authorization result after navigation or an authorization-state change, so the current [Authorize] decision is bypassed. An attacker with a low-privilege account may view content they should not be able to reach.","severity":"high","cvss":7.5,"epss":0.004559999797493219,"exploited":false,"exploited_at":null,"products":[{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-x64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-x64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-arm64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-x64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x64","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x86","fixed":["8.0.32"],"affected":">= 8.0.0, <= 8.0.31","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-x64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-x64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-arm64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-x64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x64","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x86","fixed":["10.0.13"],"affected":">= 10.0.0, <= 10.0.12","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-x64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-x64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-arm64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-x64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x64","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x86","fixed":["9.0.21"],"affected":">= 9.0.0, <= 9.0.20","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-arm64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-arm64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-musl-x64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.linux-x64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-arm64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.osx-x64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-arm64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x64","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"},{"name":"Microsoft.AspNetCore.App.Runtime.win-x86","fixed":["11.0.0-rc.2"],"affected":">= 11.0.0-preview.1, <= 11.0.0-rc.1","ecosystem":"nuget"}],"ecosystems":["nuget"],"tags":["asp.net-core","blazor","cwe-362","dotnet","package","self-hosted"],"not_affected_if":["default-config"],"how_to_check":"Run dotnet --info and check whether the installed Microsoft.AspNetCore.App runtime is 8.0.x up to 8.0.31, 9.0.x up to 9.0.20, or 10.0.x up to 10.0.12, or 11.0.0-preview.1 through 11.0.0-rc.1.\nFor each project, check the Microsoft.AspNetCore.Components.Authorization package version in the .csproj or with dotnet list package.\nSelf-contained apps carry their own runtime and must be checked separately.","fix":"Update to the patched runtime: 8.0.32, 9.0.21, 10.0.13, or 11.0.0-rc.2, then rebuild and redeploy. Self-contained apps must be recompiled and redeployed.","status":"open","published_at":"2026-10-13T19:19:32+00:00","first_seen_at":"2026-10-23T19:11:32+00:00","triaged_at":"2026-10-23T19:55:54+00:00","updated_at":"2026-10-23T23:44:52+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-23T19:55:54Z","model":"claude-haiku-5-5","output":{"fix":"Update to the patched runtime: 8.0.32, 9.0.21, 10.0.13, or 11.0.0-rc.2, then rebuild and redeploy. Self-contained apps must be recompiled and redeployed.","summary":"ASP.NET Core Blazor AuthorizeRouteView can apply a stale asynchronous authorization result after navigation or an authorization-state change, so the current [Authorize] decision is bypassed. An attacker with a low-privilege account may view content they should not be able to reach.","category":"package","who_cares":["blazor","asp.net-core","dotnet","self-hosted"],"confidence":0.8,"analyst_note":"","how_to_check":"Run dotnet --info and check whether the installed Microsoft.AspNetCore.App runtime is 8.0.x up to 8.0.31, 9.0.x up to 9.0.20, or 10.0.x up to 10.0.12, or 11.0.0-preview.1 through 11.0.0-rc.1.\nFor each project, check the Microsoft.AspNetCore.Components.Authorization package version in the .csproj or with dotnet list package.\nSelf-contained apps carry their own runtime and must be checked separately.","needs_analyst":false,"not_affected_if":["default-config"],"severity_if_unknown":"high"},"cost_usd":0.001109,"input_tokens":8833,"output_tokens":451,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':5A,14A,22A '-362':148B,290C '-70183':6A,15A,23A '/av':279C '/dotnet/announcements/issues/460':267C 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'xx7x':19A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-13T19:19:32+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"GitHub","poc_count":0,"sources":[{"source":"ghsa","external_id":"GHSA-494h-xx7x-5frh","url":"https://github.com/advisories/GHSA-494h-xx7x-5frh","severity":"high","published_at":"2026-10-13T19:59:23+00:00","modified_at":"2026-10-19T16:15:20+00:00","first_seen_at":"2026-10-23T19:11:32+00:00","fetched_at":"2026-10-23T19:11:32+00:00","note":null},{"source":"nvd","external_id":"CVE-2026-70183","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70183","severity":null,"published_at":"2026-10-13T19:19:32+00:00","modified_at":"2026-10-14T04:18:32+00:00","first_seen_at":"2026-10-23T23:44:52+00:00","fetched_at":"2026-10-23T23:44:52+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}