{"id":"CVE-2026-50651","kind":"vulnerability","aliases":["CVE-2026-50651","GHSA-wp74-jgxh-gv4q"],"related":[],"title":"Microsoft Security Advisory CVE-2026-50651 – .NET Denial of Service Vulnerability","description":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET HTTP client (System.Net.Http). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nA denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 where an attacker can exploit the HTTP/2 protocol to cause an out-of-memory condition.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/422\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 7.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`\n- **Weakness:** CWE-770 (Allocation of Resources Without Limits or Throttling)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n## <a name=\"affected-packages\"></a>Affected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### <a name=\".NET 10.0\"></a>.NET 10.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-x64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-x64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-arm64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-x64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x64)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n[Microsoft.NetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x86)               | >= 10.0.0, <= 10.0.9 | 10.0.10\n\n### <a name=\".NET 9.0\"></a>.NET 9.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-x64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-x64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-arm64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-x64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x64)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n[Microsoft.NetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x86)               | >= 9.0.0, <= 9.0.17 | 9.0.18\n\n### <a name=\".NET 8.0\"></a>.NET 8.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-x64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-x64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-arm64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-x64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x64)               | >= 8.0.0, <= 8.0.28 | 8.0.29\n[Microsoft.NetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x86)               | >= 8.0.0, <= 8.0.28 | 8.0.29\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 nuget 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-2026-50651]( https://www.cve.org/CVERecord?id=CVE-2026-50651)\n\n### Acknowledgements\n\nMiha Zupan with Microsoft\n\n### Revisions\n\nV1.0 (July 14, 2026): Advisory published.","summary":"A denial of service flaw in the .NET HTTP client (System.Net.Http) lets an attacker use the HTTP/2 protocol to cause an out-of-memory condition. The sources describe the impact as availability only, with a CVSS 3.1 score of 7.5 and no confidentiality or integrity loss.","severity":"high","cvss":7.5,"epss":0.01174,"exploited":false,"exploited_at":null,"products":[{"name":"Microsoft.NetCore.App.Runtime.linux-arm","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-arm64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-arm","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-arm64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-x64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-x64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.osx-arm64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.osx-x64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-arm","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-arm64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-x64","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-x86","fixed":["10.0.10"],"affected":">= 10.0.0, <= 10.0.9","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-arm","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-arm64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-arm","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-arm64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-x64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-x64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.osx-arm64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.osx-x64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-arm","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-arm64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-x64","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-x86","fixed":["9.0.18"],"affected":">= 9.0.0, <= 9.0.17","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-arm","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-arm64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-arm","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-arm64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-musl-x64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.linux-x64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.osx-arm64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.osx-x64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-arm","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-arm64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-x64","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"Microsoft.NetCore.App.Runtime.win-x86","fixed":["8.0.29"],"affected":">= 8.0.0, <= 8.0.28","ecosystem":"nuget"},{"name":"microsoft .net","fixed":["8.0.29"],"affected":">= 8.0.0, < 8.0.29","ecosystem":"vendor"},{"name":"microsoft .net","fixed":["9.0.18"],"affected":">= 9.0.0, < 9.0.18","ecosystem":"vendor"},{"name":"microsoft .net","fixed":["10.0.6"],"affected":">= 10.0.0, < 10.0.6","ecosystem":"vendor"},{"name":"microsoft visual studio 2022","fixed":["17.12.22"],"affected":">= 17.12.0, < 17.12.22","ecosystem":"vendor"},{"name":"microsoft visual studio 2022","fixed":["17.14.36"],"affected":">= 17.14.0, < 17.14.36","ecosystem":"vendor"},{"name":"microsoft visual studio 2026","fixed":["18.7.4"],"affected":">= 18.7.0, < 18.7.4","ecosystem":"vendor"}],"ecosystems":["nuget","vendor"],"tags":["asp.net","csharp","cwe-770","dotnet","kubernetes","runtime","self-hosted"],"not_affected_if":["runtime-outside-listed-ranges"],"how_to_check":"- Run `dotnet --info` on each host or build agent to list the installed .NET runtime version, then compare it with the affected ranges.\n- Check `Microsoft.NetCore.App.Runtime.*` package references in project files and lock files against the affected ranges.\n- Remember that self-contained applications carry their own runtime and must be checked and redeployed separately.","fix":"- .NET 8: move to `8.0.29` or later.\n- .NET 9: move to `9.0.18` or later.\n- .NET 10: move to `10.0.10` or later.\n- Update the `Microsoft.NetCore.App.Runtime` package references to the patched version, and recompile and redeploy self-contained applications.","status":"open","published_at":"2026-07-14T20:17:38+00:00","first_seen_at":"2026-11-04T04:12:14+00:00","triaged_at":"2026-11-04T04:14:22+00:00","updated_at":"2026-11-04T04:16:16+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-04T04:14:22Z","model":"claude-haiku-5-5","output":{"fix":"- .NET 8: move to `8.0.29` or later.\n- .NET 9: move to `9.0.18` or later.\n- .NET 10: move to `10.0.10` or later.\n- Update the `Microsoft.NetCore.App.Runtime` package references to the patched version, and recompile and redeploy self-contained applications.","reach":"internet","title":".NET: HTTP/2 flaw lets a remote client exhaust server memory","impact":"medium","summary":"A denial of service flaw in the .NET HTTP client (System.Net.Http) lets an attacker use the HTTP/2 protocol to cause an out-of-memory condition. The sources describe the impact as availability only, with a CVSS 3.1 score of 7.5 and no confidentiality or integrity loss.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["dotnet","csharp","asp.net","self-hosted","kubernetes"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"remote requests exhaust memory and crash the .NET process","analyst_note":"","how_to_check":"- Run `dotnet --info` on each host or build agent to list the installed .NET runtime version, then compare it with the affected ranges.\n- Check `Microsoft.NetCore.App.Runtime.*` package references in project files and lock files against the affected ranges.\n- Remember that self-contained applications carry their own runtime and must be checked and redeployed separately.","plain_action":"","needs_analyst":false,"not_affected_if":["runtime-outside-listed-ranges"],"who_is_affected":"Any application built on .NET 8, 9 or 10 that uses the affected runtime packages is exposed, and self-contained deployments are exposed too because they ship their own runtime. The sources do not say which HTTP/2 usage patterns trigger it, so every service accepting HTTP/2 traffic should be treated as in scope. Apps on runtime versions outside the listed ranges are not affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.001326,"input_tokens":9629,"output_tokens":726,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':5A,13A,21A '-50651':6A,14A,22A '-770':134B,289C '/av':278C '/dotnet/announcements/issues/422':266C '/packages/microsoft.ne':482C '/packages/microsoft.netcore.app.runtime.linux-arm)':334C,444C '/packages/microsoft.netcore.app.runtime.linux-arm64)':342C,452C '/packages/microsoft.netcore.app.runtime.linux-musl-arm)':352C,462C '/packages/microsoft.netcore.app.runtime.linux-musl-arm64)':362C,472C '/packages/microsoft.netcore.app.runtime.linux-musl-x64)':372C '/packages/microsoft.netcore.app.runtime.linux-x64)':380C '/packages/microsoft.netcore.app.runtime.osx-arm64)':388C '/packages/microsoft.netcore.app.runtime.osx-x64)':396C '/packages/microsoft.netcore.app.runtime.win-arm)':404C '/packages/microsoft.netcore.app.runtime.win-arm64)':412C '/packages/microsoft.netcore.app.runtime.win-x64)':420C '/packages/microsoft.netcore.app.runtime.win-x86)':428C '10':238C '10.0':323C '10.0.0':335C,343C,353C,363C,373C,381C,389C,397C,405C,413C,421C,429C '10.0.10':337C,345C,355C,365C,375C,383C,391C,399C,407C,415C,423C,431C '10.0.9':336C,344C,354C,364C,374C,382C,390C,398C,406C,414C,422C,430C '2022':122A,126A '2026':130A '3.1':178B,270C,277C '7.5':181B,274C '8':233C '9':235C '9.0':433C '9.0.0':445C,453C,463C,473C '9.0.17':446C,454C,464C,474C '9.0.18':447C,455C,465C,475C 'advisori':3A,195C,208C 'affect':297C,303C,307C,317C,326C,436C 'alloc':290C 'also':209C 'announc':255C,256C 'applic':220C 'architectur':301C 'arm':24A,30A,46A,54A,60A,76A,84A,90A,106A,331C,349C,401C,441C,459C 'arm64':26A,34A,42A,48A,56A,64A,72A,78A,86A,94A,102A,108A,339C,359C,385C,409C,449C,469C 'asp.net':131B 'attack':154B,241C 'avail':173B 'caus':160B,248C 'client':150B,205C 'condit':166B,254C 'confidenti':184B 'csharp':132B 'cve':4A,12A,20A 'cvss':177B,267C,276C 'cwe':133B,288C 'denial':8A,142B,226C 'describ':169B 'detail':268C 'develop':214C 'dotnet':135B 'execut':188C 'exist':230C 'exploit':243C 'flaw':145B 'found':262C 'ghsa':16A 'ghsa-wp74-jgxh-gv4q':15A 'github.com':265C 'github.com/dotnet/announcements/issues/422':264C 'guidanc':211C 'gv4q':19A 'h':286C 'high':272C 'host':140B 'http':149B,204C 'http/2':157B,245C 'impact':171B 'inform':198C 'integr':186B 'issu':259C 'jgxh':18A 'kubernet':136B 'l/pr':280C 'let':152B 'limit':294C 'list':320C 'loss':187B 'memori':165B,253C 'microsoft':1A,113A,115A,117A,119A,123A,127A,190C,309C 'microsoft.netcore.app.runtime.linux':23A,25A,27A,31A,35A,39A,53A,55A,57A,61A,65A,69A,83A,85A,87A,91A,95A,99A,330C,338C,346C,356C,366C,376C,440C,448C,456C,466C,476C 'microsoft.netcore.app.runtime.osx':41A,43A,71A,73A,101A,103A,384C,392C 'microsoft.netcore.app.runtime.win':45A,47A,49A,51A,75A,77A,79A,81A,105A,107A,109A,111A,400C,408C,416C,424C 'musl':29A,33A,37A,59A,63A,67A,89A,93A,97A,348C,358C,368C,458C,468C,478C 'musl-arm':28A,58A,88A,347C,457C 'musl-arm64':32A,62A,92A,357C,467C 'musl-x64':36A,66A,96A,367C,477C 'n/a':285C 'n/ac':279C 'n/i':284C 'n/s':282C 'n/ui':281C 'name':325C,435C 'net':7A,114A,116A,118A,148B,203C,232C,234C,237C,310C,322C,432C 'out-of-memori':162B,250C 'packag':304C,318C,324C,434C 'patch':328C,438C 'platform':298C,299C 'project':311C 'protocol':158B,246C 'provid':197C,210C 'releas':192C 'remov':222C 'resourc':292C 'runtim':137B 'score':179B,273C 'secur':2A,194C 'self':139B 'self-host':138B 'servic':10A,144B,228C 'sever':271C 'sourc':168B 'studio':121A,125A,129A 'summari':189C 'system.net.http':151B,206C 'throttl':296C 'u/c':283C 'updat':218C 'use':155B,314C 'vector':275C 'version':269C,319C,327C,329C,437C,439C 'visual':120A,124A,128A 'vulner':11A,201C,224C,229C,306C 'weak':287C 'without':293C 'wp74':17A 'www.nuget.org':333C,341C,351C,361C,371C,379C,387C,395C,403C,411C,419C,427C,443C,451C,461C,471C,481C 'www.nuget.org/packages/microsoft.ne':480C 'www.nuget.org/packages/microsoft.netcore.app.runtime.linux-arm)':332C,442C 'www.nuget.org/packages/microsoft.netcore.app.runtime.linux-arm64)':340C,450C 'www.nuget.org/packages/microsoft.netcore.app.runtime.linux-musl-arm)':350C,460C 'www.nuget.org/packages/microsoft.netcore.app.runtime.linux-musl-arm64)':360C,470C 'www.nuget.org/packages/microsoft.netcore.app.runtime.linux-musl-x64)':370C 'www.nuget.org/packages/microsoft.netcore.app.runtime.linux-x64)':378C 'www.nuget.org/packages/microsoft.netcore.app.runtime.osx-arm64)':386C 'www.nuget.org/packages/microsoft.netcore.app.runtime.osx-x64)':394C 'www.nuget.org/packages/microsoft.netcore.app.runtime.win-arm)':402C 'www.nuget.org/packages/microsoft.netcore.app.runtime.win-arm64)':410C 'www.nuget.org/packages/microsoft.netcore.app.runtime.win-x64)':418C 'www.nuget.org/packages/microsoft.netcore.app.runtime.win-x86)':426C 'x64':38A,40A,44A,50A,68A,70A,74A,80A,98A,100A,104A,110A,369C,377C,393C,417C,479C 'x86':52A,82A,112A,425C","nicknames":[],"mitigations":[],"who_affected":"Any application built on .NET 8, 9 or 10 that uses the affected runtime packages is exposed, and self-contained deployments are exposed too because they ship their own runtime. The sources do not say which HTTP/2 usage patterns trigger it, so every service accepting HTTP/2 traffic should be treated as in scope. Apps on runtime versions outside the listed ranges are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["microsoftnet","microsoftnetcoreappruntimelinuxarm","microsoftnetcoreappruntimelinuxarm64","microsoftnetcoreappruntimelinuxmuslarm","microsoftnetcoreappruntimelinuxmuslarm64","microsoftnetcoreappruntimelinuxmuslx64","microsoftnetcoreappruntimelinuxx64","microsoftnetcoreappruntimeosxarm64","microsoftnetcoreappruntimeosxx64","microsoftnetcoreappruntimewinarm","microsoftnetcoreappruntimewinarm64","microsoftnetcoreappruntimewinx64","microsoftnetcoreappruntimewinx86","microsoftvisualstudio2022","microsoftvisualstudio2026","net","visualstudio2022","visualstudio2026"],"ptokens":["2022","2026","app","arm","arm64","linux","microsoft","musl","net","netcore","osx","runtime","studio","visual","win","x64","x86"],"labels":["aspnet","csharp","cwe770","dotnet","high","kubernetes","nuget","runtime","selfhosted","vendor"],"campaign_type":null,"first_public_at":"2026-07-14T20:17:38+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_by":"GitHub","poc_count":0,"sources":[{"source":"ghsa","external_id":"GHSA-wp74-jgxh-gv4q","url":"https://github.com/advisories/GHSA-wp74-jgxh-gv4q","severity":"high","published_at":"2026-07-20T23:02:43+00:00","modified_at":"2026-11-04T04:08:55+00:00","first_seen_at":"2026-11-04T04:12:14+00:00","fetched_at":"2026-11-04T04:12:14+00:00","note":null},{"source":"nvd","external_id":"CVE-2026-50651","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50651","severity":null,"published_at":"2026-07-14T20:17:38+00:00","modified_at":"2026-10-28T20:17:55+00:00","first_seen_at":"2026-11-04T04:16:16+00:00","fetched_at":"2026-11-04T04:16:16+00:00","note":null}],"documents":[{"id":63879,"url":"https://api.github.com/repos/dotnet/runtime/security-advisories/GHSA-wp74-jgxh-gv4q","title":"Maintainer's advisory: api.github.com","kind":"vendor","source":"ghsa","publisher":"vendor","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Maintainer's advisory: api.github.com"},{"id":63880,"url":"https://github.com/dotnet/runtime/security/advisories/GHSA-wp74-jgxh-gv4q","title":"Maintainer's advisory: github.com","kind":"vendor","source":"ghsa","publisher":"vendor","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Maintainer's advisory: github.com"},{"id":63913,"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50651","title":"Vendor advisory: msrc.microsoft.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Vendor advisory: msrc.microsoft.com"}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}