CVE-2020-36891CWE-79
Kentico Xperience <= 12.0.49 File Upload Stored XSS
Medium · published December 18, 2025
What it is
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.
The record
Technical detail
- CVSS v4.0
- 5.1 · MEDIUM
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- EPSS
- 0.00218 · 11.6th percentile
- Weakness
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- Published
- 2025-12-18T19:53Z
EPSS history
Timeline