CVE-2026-26130: ASP.NET Core Denial of Service Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Mar

Released

2026-03-10

EPSS Score

1.27% (percentile: 79.3%)

Description

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Affected Products (3)

Developer Tools

• ASP.NET Core 8.0
• ASP.NET Core 9.0
• ASP.NET Core 10.0

Security Updates (3)

• 5081277
• 5081278
• 5081276

Acknowledgments

<a href="http://github.com/bdach">Bartłomiej Dach</a>

Revision History

• 2026-03-10: Information published.