CVE-2020-36891: Kentico Xperience

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

A stored cross-site scripting vulnerability in Kentico Xperience allows attackers to upload files with spoofed Content-Type that do not match file extensions. Attackers can exploit this vulnerability by uploading malicious files with manipulated MIME types, allowing malicious scripts to execute in users' browsers.

Affected products

• Kentico Xperience: up to and including 12.0.49

Published 2025-12-18. Last modified 2026-06-17.