CVE-2020-1147
dotnet: XML source markup processing remote code execution
Severity
CriticalRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 15, 2020
Updated · June 28, 2026
Description
It was discovered that .NET Core did not properly check the source markup of XML files. A remote, unauthenticated attacker could possibly exploit this flaw to execute arbitrary code by sending specially crafted requests to an application parsing certain kinds of XML files or an ASP.NET Core application.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-502 · Deserialization of Untrusted Data