CVE-2026-114156: ASP.NET Core Security Feature Bypass Vulnerability
Published Nov 10, 2026
·Updated
ASP.NET Core Security Feature Bypass Vulnerability
Other sources
Improper input validation in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.
— Microsoft
Affected Software
7 affected componentsFixes available
Microsoft Visual Studio 2026>=18.12<18.12.0
18.12.0
All of the following
Microsoft .NET>=11.0<11.0.0
11.0.0
Linux Linux*
All of the following
Microsoft .NET>=11.0<11.0.0
11.0.0
Microsoft Windows*
All of the following
Microsoft .NET>=11.0<11.0.0
11.0.0
Apple macOS*
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.12.0 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 11.0.0
Event History
Nov 10, 2026
CVE Published
via Microsoft·04:00 PM
Data Sourced
via Microsoft·04:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·04:00 PM
Affected Software
CVE Published
via MITRE·06:19 PM
Data Sourced
via MITRE·06:19 PM
DescriptionSeverity
Data Sourced
via NVD·07:19 PM
DescriptionSeverityWeakness