CVE-2026-109481

ASP.NET Core Elevation of Privilege Vulnerability

CVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 10 Nov 2026 20:21:22 UTC. Read the latest advisory.

cve-program · CVE-2026-109481

Published

Cross-site request forgery (csrf) in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-109481

Published

.NET 11.0 installed on Linux

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Microsoft",
                    "product": ".NET 11.0 installed on Linux",
                    "versions": [
                        {
                            "version": "11.0.0-preview.1",
                            "lessThan": "11.0.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

.NET 11.0 installed on Mac OS

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Microsoft",
                    "product": ".NET 11.0 installed on Mac OS",
                    "versions": [
                        {
                            "version": "11.0.0-preview.1",
                            "lessThan": "11.0.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

.NET 11.0 installed on Windows

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Microsoft",
                    "product": ".NET 11.0 installed on Windows",
                    "versions": [
                        {
                            "version": "11.0.0-preview.1",
                            "lessThan": "11.0.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Visual Studio 2026 version 18.12

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Visual Studio 2026 version 18.12",
                    "versions": [
                        {
                            "version": "18.12.0",
                            "lessThan": "18.12.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON