CVE-2020-36891
5.4 · MEDIUMOverview
CVE-2020-36891 is a medium-severity vulnerability affecting kentico xperience. It was published on December 18, 2025 and has a CVSS 3.1 base score of 5.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from kentico. Update xperience to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| kentico | xperience | 0 | Affected |
Frequently Asked Questions
What is CVE-2020-36891?
CVE-2020-36891 is a medium-severity vulnerability affecting kentico xperience. It was published on December 18, 2025 and has a CVSS 3.1 base score of 5.4 (MEDIUM).
How severe is CVE-2020-36891?
This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-36891?
Check the references section for vendor advisories and patches from kentico. Update xperience to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-36891?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-36891 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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