CVE-2026-96230
HighCVSS 8.8Summary
A cross-site scripting (XSS) vulnerability in ASP.NET Core allows an unauthorized attacker to execute code over a network.
Risk Assessment
An attacker may inject malicious scripts into web pages, potentially leading to user data theft or session hijacking.
Recommendation
Install the latest security updates for ASP.NET Core.
Other vulnerabilities in ASP.NET Core
See all- CVE-2026-96236High
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
- CVE-2026-96233High
Out-of-bounds write in ASP.NET Core allows an unauthorized attacker to deny service over a network.
- CVE-2017-11879High
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.
- CVE-2017-0249High
An elevation of privilege vulnerability exists when ASP.NET Core fails to properly sanitize web requests.
- CVE-2026-88092Critical
Inconsistent interpretation of HTTP requests (HTTP request/response smuggling) in ASP.NET Core allows an unauthorized attacker to perform tampering over a network.
- CVE-2026-70188Critical
Inconsistent interpretation of HTTP requests (HTTP request/response smuggling) in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.
- CVE-2026-40372Critical
A vulnerability in ASP.NET Core due to improper verification of cryptographic signature allows an unauthorized attacker to elevate privileges over a network.
- CVE-2021-31957Medium
ASP.NET Core has a Denial of Service (DoS) vulnerability that could lead to service overload and unavailability.
- CVE-2020-1161High
Denial of service vulnerability in ASP.NET Core when improperly handling web requests. A remote unauthenticated attacker could send specially crafted requests, causing the application to become unavailable.
- CVE-2026-69304Medium
Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Original NVD description (English source)
Improper neutralization of input during web page generation ('cross-site scripting') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

