System.IdentityModel.Tokens.Jwt

Includes types that provide support for creating, serializing and validating JSON Web Tokens. As of IdentityModel 7x, this is a legacy tool that should be replaced with Microsoft.IdentityModel.JsonWebTokens.

View on Nuget

View on Github

Activity

Latest release: 1mo ago
Total releases: 133
Cadence: ~13 days
Last 12 months: 11

Reach

Stars: —

Details

License: MIT
First release: Jun 07, 2013

Releases

Version	Released
`8.22.0` minor	Jul 29, 2026
`8.21.0` minor	Jul 22, 2026
`5.7.1` patch	Jul 14, 2026
`7.7.3` patch	Jul 14, 2026
`8.19.2` patch	Jul 14, 2026
`8.19.1` patch	Jun 04, 2026
`8.19.0` minor	Jun 04, 2026
`8.18.0` minor	Apr 30, 2026
`8.17.0` minor	Mar 24, 2026
`8.16.0` minor	Feb 13, 2026
`8.15.0` minor	Nov 18, 2025
`8.14.0` minor	Aug 15, 2025
`8.13.1` patch	Aug 08, 2025
`8.13.0` minor	Jul 21, 2025
`8.12.1` patch	Jun 17, 2025
`8.12.0` minor	Jun 03, 2025
`8.11.0` minor	May 23, 2025
`8.10.0` minor	May 15, 2025
`8.9.0` minor	Apr 24, 2025
`8.8.0` minor	Apr 08, 2025
`8.7.0` minor	Mar 21, 2025
`8.6.1` patch	Mar 07, 2025
`8.6.0` minor	Feb 22, 2025
`8.5.0` minor	Feb 15, 2025
`8.4.0` minor	Feb 07, 2025
`8.3.1` patch	Jan 17, 2025
`8.3.0` minor	Dec 04, 2024
`8.2.1` patch	Nov 15, 2024
`8.2.0` minor	Nov 02, 2024
`8.1.2` patch	Oct 08, 2024
`8.1.1` minor	Oct 05, 2024
`8.0.1` patch	Jul 23, 2024
`7.7.1` patch	Jul 20, 2024
`6.36.0` minor	Jul 19, 2024
`7.7.0` minor	Jul 18, 2024
`8.0.0` major	Jul 16, 2024
`6.35.1` patch	Jul 11, 2024
`7.6.3` patch	Jul 10, 2024
`7.6.2` patch	Jun 20, 2024
`8.0.0-preview1` pre	Jun 19, 2024
`7.6.1` patch	Jun 17, 2024
`7.6.0` minor	May 28, 2024
`7.5.2` patch	May 13, 2024
`7.5.1` patch	Apr 05, 2024
`7.5.0` minor	Mar 27, 2024
`7.4.1` patch	Mar 15, 2024
`7.4.0` minor	Feb 26, 2024
`7.4.0-preview1` pre	Feb 12, 2024
`7.3.1` patch	Feb 03, 2024
`7.3.0` minor	Jan 30, 2024

1–50 of 133

Repository

azuread/azure-activedirectory-identitymodel-extensions-for-dotnet

Forks: —
Open issues: —

Dependencies (2)

Depends on

8.22.0

Used by

4689

Supply-chain exposure

4,689 tracked projects depend on this, <1% of every package we track.

A known CVE here directly exposes every one of them.

Known CVEs (1)

CVE-2024-21319 GHSA-59j7-ghrg-fj52 BIT-dotnet-2024-21319 BIT-dotnet-sdk-2024-21319 Jan 09, 2024

Microsoft ASP.NET Core project templates vulnerable to denial of service

6.8 / 10
Medium
Network Low High None Changed None None High

A Denial of Service vulnerability exists in ASP.NET Core project templates which utilize JWT-based authentication tokens. This vulnerability allows an unauthenticated client to consume arbitrarily large amounts of server memory, potentially triggering an out-of-memory condition on the server and making the server no longer able to respond to legitimate requests.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/290

Mitigation factors

This impacts only .NET Core-based projects that were created using any version of project templates listed in affected software. Other project templates e.g., console applications, MAUI applications, Windows Forms or WPF applications, are not affected.

Affected software

This impacts only .NET Core-based projects that were created using any version of the below project templates.

ASP.NET Core Web App (Model-View-Controller)

ASP.NET Core Web API

ASP.NET Core Web App (Razor Pages)

Blazor Server App

Blazor WebAssembly App

Advisory FAQ

How do I know if I am affected?

If you are you using project templates listed in affected software, you may be exposed to the vulnerability.

How do I fix the issue?

For existing projects:

If you ever created any of these projects via the dotnet new command or via Visual Studio's File -> New Project gesture, and if you enabled federated authentication at project creation time, your project may be vulnerable. To remediate the vulnerability, use your package manager to update any references you may have to the Microsoft.AspNetCore.Authentication.JwtBearer, Microsoft.AspNetCore.Authentication.OpenIdConnect, and Microsoft.IdentityModel.JsonWebTokens packages to their respective latest versions.

Microsoft.AspNetCore.Authentication.JwtBearer

Microsoft.AspNetCore.Authentication.OpenIdConnect

If your project does not reference any of those three packages, you are not exposed to this vulnerability.

For new projects:

To remediate this issue please update to the latest SDK listed below. Simply installing the SDK update is not sufficient to remediate projects already-created / already-deployed projects which existed prior to this update being released.

To fix the issue please install the latest version of .NET 6.0 or .NET 7.0. 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.

If you are using one of the affected packages, please update to the patched version listed above.

If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the dotnet --info command. You will see output like the following;

.NET Core SDK (reflecting any global.json): Version: 7.0.200 Commit: 8473146e7d Runtime Environment: OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\7.0.300\ Host (useful for support): Version: 76.0.5 Commit: 8473146e7d .NET Core SDKs installed: 7.0.200 [C:\Program Files\dotnet\sdk] .NET Core runtimes installed: Microsoft.AspNetCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

If you're using .NET 8.0, you should download and install .NET 8.0.101 SDK (for Visual Studio 2022 v17.8) from https://dotnet.microsoft.com/download/dotnet-core/8.0.

If you're using .NET 7.0, you should download and install .NET SDK 7.0.115 (for Visual Studio 2022 v17.4) from https://dotnet.microsoft.com/download/dotnet-core/7.0.

If you're using .NET 6.0, you should download and install .NET SDK 6.0.321 (for Visual Studio 2022 v17.2) from https://dotnet.microsoft.com/download/dotnet-core/6.0.

.NET 6.0, .NET 7.0, .NET 8.0 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in .NET 8.0 or .NET 7.0 or .NET 6.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime and https://github.com/dotnet/aspnet/. 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.

Disclaimer

The 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.

Acknowledgement

Morgan Brown, Microsoft Corp.

Affected versions

1.0.03.0.03.0.13.0.24.0.04.0.0-RC14.0.0-RC1-10701-11474.0.0-RC24.0.0-alpha4.0.0-beta14.0.14.0.2.202250630

+ 88 more Show less

4.0.2.2022507114.0.2.2051114374.0.2.2062213514.0.3.3082612004.0.4.4020709484.0.4.4030615545.0.05.0.0-beta7-2082411205.0.0-beta8-2101311165.0.0-rc1-2111610245.0.0-rc2-3050611495.0.1-pre-3101213235.1.05.1.15.1.25.1.35.1.45.1.55.2.05.2.0-preview1-4082907255.2.0-preview2-411132209155.2.15.2.25.2.35.2.45.3.05.4.05.5.05.6.06.10.06.10.16.10.26.11.06.11.16.12.06.12.16.12.26.13.06.13.16.14.06.14.16.15.06.15.16.16.06.17.06.18.06.19.06.20.06.21.06.22.06.22.16.23.06.23.16.24.06.25.06.25.16.26.06.26.16.27.06.28.06.28.16.29.06.30.06.30.16.31.06.32.06.32.16.32.26.32.36.33.06.5.06.5.16.6.06.7.06.7.16.7.2-preview-108032227156.8.06.9.07.0.07.0.0-preview7.0.0-preview27.0.0-preview37.0.0-preview47.0.0-preview57.0.17.0.27.0.37.1.0-preview

Fixed in

5.7.06.34.07.1.2

References

https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/security/advisories/GHSA-8g9c-28fc-mcx2
https://github.com/dotnet/aspnetcore/security/advisories/GHSA-59j7-ghrg-fj52
https://github.com/dotnet/announcements/issues/290
https://github.com/dotnet/aspnetcore

Updated Aug 07, 2026 · Source: OSV.dev

Insights

Releases per month

last 12 months

Release mix

major 6
minor 66
patch 53
pre 7

133 releases

Dependencies over time

per release

Release calendar

2026

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Less More