CVE-2017-11879: Microsoft ASP.NET Core

High severity, CVSS 8.8. EPSS: 9.4% chance of exploitation in the next 30 days.

ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka "ASP.NET Core Elevation Of Privilege Vulnerability".

Affected products

• Microsoft ASP.NET Core: version 2.0 only

Published 2017-11-15. Last modified 2026-06-17.