Stored Cross-Site Scripting in Kentico Xperience
CVE-2020-36891

5.1MEDIUM

Key Information:

Vendor

Kentico

Status
Vendor
CVE Published:
18 December 2025

What is CVE-2020-36891?

A stored cross-site scripting vulnerability exists in Kentico Xperience, enabling attackers to upload files with spoofed Content-Type headers that do not align with the actual file extensions. This exploit allows the execution of malicious scripts in the browsers of users who interact with the compromised files, posing a significant risk to the security and integrity of web applications utilizing the affected version of Kentico Xperience.

Affected Version(s)

Xperience 0 <= 12.0.49

References

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ataberk Yavuzer
.
CVE-2020-36891 : Stored Cross-Site Scripting in Kentico Xperience