CVE-2026-114156

ASP.NET Core Security Feature Bypass Vulnerability

Published Nov 10, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Improper input validation in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8w29-6cjc-h6w4 Microsoft Security Advisory CVE-2026-114156 - ASP.NET Core Security Feature Bypass Vulnerability
Ubuntu USN Ubuntu USN USN-9042-1 .NET vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper input validation in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.
Title ASP.NET Core Security Feature Bypass Vulnerability
First Time appeared Microsoft
Microsoft .net 11.0 Installed On Linux
Microsoft .net 11.0 Installed On Mac Os
Microsoft .net 11.0 Installed On Windows
Microsoft microsoft Visual Studio 2026 Version 18.12
Weaknesses CWE-41
CPEs cpe:2.3:a:microsoft:.net_11.0_installed_on_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_11.0_installed_on_mac_os:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_11.0_installed_on_windows:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.12:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net 11.0 Installed On Linux
Microsoft .net 11.0 Installed On Mac Os
Microsoft .net 11.0 Installed On Windows
Microsoft microsoft Visual Studio 2026 Version 18.12
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 12, 2026, 9:46 PM
Reserved
Oct 20, 2026, 9:56 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 7:19 PM
Modified
Nov 10, 2026, 8:18 PM
Severity
Important
Public date
Nov 10, 2026, 5:00 PM