Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.
Open advisories
6 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.
Microsoft Security Advisory CVE-2025-55315: .NET Security Feature Bypass Vulnerability <a name="executive-summary"</aExecutive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core 10.0 , ASP.NET Core 9.0 , ASP.NET Core 8.0, and ASP.NET Core 2.3. This advisory also provides guidance on what developers can do to update their applications to address this vulnerability. Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network. Discussion Discussion for this issue can be found at https://github.com/dotnet/announcements/issues/371 <a name="mitigation-factors"</aMitigation factors Microsoft has not identified any mitigating factors for this vulnerability. <a name="affected-software"</aAffected software Any ASP.NET Core 10.0 application running on ASP.NET Core 10.0.0-rc.1.25451.107 or earlier. Any ASP.NET Core 9.0…
Recommended action: Upgrade to 2.3.6 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
A denial-of-service vulnerability exists in the way Kestrel parses HTTP/2 requests. The security update addresses the vulnerability by fixing the way the Kestrel parses HTTP/2 requests. Users are advised to upgrade.
Recommended action: Upgrade to 2.1.25 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0548.
Recommended action: Upgrade to 2.1.7 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Microsoft is aware of a denial of service vulnerability in ASP.NET Core when a malformed request is terminated. An attacker who successfully exploited this vulnerability could cause a denial of service attack. The update addresses the vulnerability by correcting how ASP.NET Core handles such requests.
Recommended action: Upgrade to 2.1.2 or 2.0.4 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Microsoft made an internal discovery of a security vulnerability in version 2.x of ASP.NET Core where a specially crafted request can cause excess resource consumption in Kestrel.
Recommended action: Upgrade to 2.0.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privilege vulnerability due to how web applications that are created from templates validate web requests, aka "ASP.NET Core Elevation Of Privilege Vulnerability".
Recommended action: Upgrade to 2.0.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.