CVE-2020-36891 - CVE House
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Status published Medium CVE-2020-36891

Kentico Xperience <= 12.0.49 File Upload Stored XSS

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Ataberk Yavuzer

Affected Vendor

Affected Software

Xperience
Vulnerable Versions:
0

Timeline

Official Publish: December 18th, 2025
Last Modified: December 30th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)