CVE-2021-46703: Razorengine Project Razorengine

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

In the IsolatedRazorEngine component of Antaris RazorEngine through 4.5.1-alpha001, an attacker can execute arbitrary .NET code in a sandboxed environment (if users can externally control template contents). NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Affected products

• Razorengine Project Razorengine: before 4.5.1 (fixed in 4.5.1); version 4.5.1 only

Published 2022-03-06. Last modified 2026-06-17.