CVE-2026-26130

A flaw was found in ASP.NET Core. This vulnerability allows an unauthorized attacker to perform a Denial of Service (DoS) attack over a network by allocating resources without limits or throttling. This can lead to the unavailability of the service for legitimate users.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, configure resource limits and throttling for ASP.NET Core applications. This can be achieved by implementing request limits within the application configuration or by utilizing resource quotas provided by container orchestration platforms like OpenShift/Kubernetes. Additionally, web servers acting as reverse proxies can be configured to rate limit incoming requests.

Example for OpenShift/Kubernetes ResourceQuotas:

apiVersion: v1
kind: ResourceQuota
metadata:
  name: aspnet-core-quotas
spec:
  hard:
    requests.cpu: "1"
    requests.memory: "1Gi"
    limits.cpu: "2"
    limits.memory: "2Gi"

Consult ASP.NET Core documentation for application-level request throttling configurations. Ensure that any changes to resource limits or throttling are thoroughly tested to avoid unintended service disruptions. A service restart or reload may be required for changes to take effect.