Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-f8h2-vmm9-qhj6 Microsoft Security Advisory CVE-2026-45591 – ASP.NET Core Denial of Service Vulnerability
Ubuntu USN Ubuntu USN USN-8420-1 .NET vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 11 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Weaknesses CWE-770
CPEs cpe:/a:redhat:enterprise_linux:8
cpe:/a:redhat:hummingbird:1
cpe:/o:redhat:enterprise_linux:10.2
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
References
Metrics threat_severity

None

threat_severity

Important


Wed, 10 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 09 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
Description Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Title ASP.NET Core Denial of Service Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft asp.net Core
Microsoft visual Studio 2026
Weaknesses CWE-400
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft asp.net Core
Microsoft visual Studio 2026
References
Metrics cvssV3_1

{'score': 7.5, '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-25T22:43:51.300Z

Reserved: 2026-05-12T19:55:45.730Z

Link: CVE-2026-45591

cve-icon Vulnrichment

Updated: 2026-07-15T00:52:29.949Z

cve-icon NVD

Status : Modified

Published: 2026-06-09T17:17:26.933

Modified: 2026-07-23T08:10:00.137

Link: CVE-2026-45591

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-09T17:05:29Z

Links: CVE-2026-45591 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T02:15:17Z