CVE-2026-26130
Description
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.
Mitigation
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:
yaml
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.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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