CVE-2019-1302 Elevation of privilege in ASP.NET Core
Attackers can escalate privileges in ASP.NET Core web applications created with vulnerable project templates due to improper request sanitization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-1302?
CVE-2019-1302 is a high-severity vulnerability in Microsoft ASP.NET Core, published on 11 Sep 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An elevation of privilege vulnerability exists when a ASP.NET Core web application, created using vulnerable project templates, fails to properly sanitize web requests, aka 'ASP.NET Core Elevation Of Privilege Vulnerability'.
Weakness: CWE-20
Which versions are affected by CVE-2019-1302?
4 open source packages ship an affected version, including Microsoft.AspNetCore.SpaServices. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.AspNetCore.SpaServices NuGet | From 2.1.0 | 2.1.13 |
Microsoft.AspNetCore.SpaServices NuGet | From 2.1.0 | 2.1.13 |
Microsoft.AspNetCore.SpaServices NuGet | From 2.2.0 | 2.2.7 |
Microsoft.AspNetCore.SpaServices NuGet | From 2.2.0 | 2.2.7 |
Products include Microsoft Asp.net Core.
How do I fix CVE-2019-1302?
Upgrade Microsoft.AspNetCore.SpaServices to a fixed version for your release line: 2.1.13 or 2.2.7.
Is CVE-2019-1302 being exploited?
There is no known exploitation of CVE-2019-1302 in the wild and no public exploit code.
Other vulnerabilities in Microsoft ASP.NET Core
- CVE-2025-55315 ASP.NET Security Feature Bypass Vulnerability
- CVE-2026-88092 ASP.NET Core Tampering Vulnerability
- CVE-2026-40372 ASP.NET Core Elevation of Privilege Vulnerability
- CVE-2021-43877 ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
- CVE-2020-0603 Remote code execution in ASP.NET Core
Sources
Also known as GHSA-xr8f-59pp-rxxh.