CVE-2026-26130
Published: 10 March 2026
Summary
CVE-2026-26130 is a high-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Microsoft Asp.Net Core. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 11.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SC-5 (Denial-of-service Protection) and SC-6 (Resource Availability).
Deeper analysis
CVE-2026-26130 is an allocation of resources without limits or throttling vulnerability, tracked as CWE-770, that affects ASP.NET Core. The flaw carries a CVSS 3.1 base score of 7.5 and permits remote denial of service through uncontrolled resource consumption.
An unauthenticated attacker can send specially crafted network requests to an affected ASP.NET Core application, exhausting server resources and rendering the service unavailable without any user interaction or authentication.
Microsoft has published an advisory for the issue at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26130. The associated EPSS score has remained low, moving only from 0.0363 to a peak of 0.0403.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-10693
Vulnerability details
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CVE describes a remotely exploitable resource exhaustion flaw (CWE-770) in ASP.NET Core that enables network-based denial of service; directly maps to exploitation of public-facing apps (T1190) and application/system exploitation for endpoint DoS (T1499.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SC-5 directly implements denial-of-service protections such as throttling and rate limiting to prevent unauthorized network attackers from causing resource exhaustion as exploited in this CVE.
SC-6 enforces limits on resource allocation to processes or users, directly addressing the unbounded resource allocation without limits or throttling in ASP.NET Core.
SI-2 ensures timely remediation of identified flaws like this CVE through patching, as guided by Microsoft's update, preventing exploitation of the resource allocation vulnerability.