SB2026071762 - Multiple vulnerabilities in Microsoft OData for ASP.NET and ASP.NET Core

Description

This security bulletin contains information about 2 vulnerabilities.

1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-50506)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to unrestricted resource allocation in OData for ASP.NET and ASP.NET Core. A remote attacker can bypass implemented security restrictions and perform a denial of service (DoS) attack.

2) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-45646)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to unrestricted resource allocation in OData for ASP.NET and ASP.NET Core. A remote attacker can bypass implemented security restrictions and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50506
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45646