TI-2024-14368 Aliases CVE-2024-21643 GHSA-rv9j-c866-gp5h

Microsoft.IdentityModel.Protocols.SignedHttpRequest remote code execution vulnerability

MEDIUM 44CWE-94Published 2024-01-10 · Updated 2025-06-10

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-94.

Summary

IdentityModel Extensions for .NET provide assemblies for web developers that wish to use federated identity providers for establishing the caller's identity. Anyone leveraging the `SignedHttpRequest`protocol or the `SignedHttpRequestValidator`is vulnerable. Microsoft.IdentityModel trusts the `jku`claim by default for the `SignedHttpRequest`protocol. This raises the possibility to make any remote or local `HTTP GET` request. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.02233 82nd percentileScored 2026-11-07

Fix Fixed azure-activedirectory-identitymodel-extensions-for-dotnet (AzureAD): 6.34.0, 7.1.2Microsoft.IdentityModel.Protocols.SignedHttpRequest (NuGet): 6.34.0, 7.1.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
AzureAD	azure-activedirectory-identitymodel-extensions-for-dotnet	before 6.34.0; 7.0.0-preview to before 7.1.2	6.34.0, 7.1.2	Patch available	CNA
—	Microsoft.IdentityModel.Protocols.SignedHttpRequest (NuGet)	before 6.34.0	6.34.0	Patch available	GHSA-rv9j-c866-gp5h
—	Microsoft.IdentityModel.Protocols.SignedHttpRequest (NuGet)	7.0.0-preview to before 7.1.2	7.1.2	Patch available	GHSA-rv9j-c866-gp5h

azure-activedirectory-identitymodel-extensions-for-dotnet VendorAzureAD Affected before 6.34.0; 7.0.0-preview to before 7.1.2 Fixed in 6.34.0, 7.1.2 Patch available CNA
Microsoft.IdentityModel.Protocols.SignedHttpRequest (NuGet) Vendor— Affected before 6.34.0 Fixed in 6.34.0 Patch available GHSA-rv9j-c866-gp5h
Microsoft.IdentityModel.Protocols.SignedHttpRequest (NuGet) Vendor— Affected 7.0.0-preview to before 7.1.2 Fixed in 7.1.2 Patch available GHSA-rv9j-c866-gp5h

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:identitymodel_extensions::::::.net::*	before 6.34.0; 7.0.0 to before 7.1.2	Vulnerable	Microsoft

cpe:2.3:a:microsoft:identitymodel_extensions:*:*:*:*:*:.net:*:* Versions before 6.34.0; 7.0.0 to before 7.1.2 Vulnerable ·Microsoft

Remediation

Fix · CNA azure-activedirectory-identitymodel-extensions-for-dotnet (AzureAD) Fixed in 6.34.0, 7.1.2
Fix · GHSA-rv9j-c866-gp5h Microsoft.IdentityModel.Protocols.SignedHttpRequest (NuGet) Fixed in 6.34.0 Advisory →
Fix · GHSA-rv9j-c866-gp5h Microsoft.IdentityModel.Protocols.SignedHttpRequest (NuGet) Fixed in 7.1.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2024-21643
2026-10-03 Alias added: GHSA-rv9j-c866-gp5h

References

Advisory 3

Other 3

TI-2025-23140 Microsoft Identity Web Exposes Client Secrets and Certificate Information in Service Logs CVSS 3.1MEDIUM 4.7
TI-2024-17948 MSAL.NET applications targeting Xamarin Android and .NET Android (MAUI) susceptible to local denial of service CVSS 3.1LOW 3.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences