Microsoft.IdentityModel.Protocols.SignedHttpRequest remote code execution vulnerability
Impact
What kind of vulnerability is it? Who is impacted?
Anyone leveraging the SignedHttpRequestprotocol or the SignedHttpRequestValidatoris vulnerable. Microsoft.IdentityModel trusts the jkuclaim by default for the SignedHttpRequestprotocol. This raises the possibility to make any remote or local HTTP GET request.
Patches
Has the problem been patched? What versions should users upgrade to? The vulnerability has been fixed in Microsoft.IdentityModel.Protocols.SignedHttpRequest. Users should update all their Microsoft.IdentityModel versions to 7.1.2 (for 7x) or higher, 6.34.0 (for 6x) or higher, if using Microsoft.IdentityModel.Protocols.SignedHttpRequest.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading? No, users must upgrade.
References
Are there any links users can visit to find out more? https://aka.ms/IdentityModel/Jan2024/jku
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | Microsoft.IdentityModel.Protocols.SignedHttpRequest | < 6.34.0, >= 7.0.0-preview, < 7.1.2 | 6.34.0, 7.1.2 |
References
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/security/advisories/GHSA-rv9j-c866-gp5h
- https://nvd.nist.gov/vuln/detail/CVE-2024-21643
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/6.34.0
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/7.1.2
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/wiki/jkucve
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L- Weakness (CWE)
CWE-94- Platform
- .NET (NuGet)
- Package
Microsoft.IdentityModel.Protocols.SignedHttpRequest- Disclosed
- 09.01.2024
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-rv9j-c866-gp5h - CC BY 4.0
Vulnerability history: Microsoft.IdentityModel.Protocols.SignedHttpRequest
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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