Is CVE-2020-36889 actively exploited?

CVE-2020-36889 has no public evidence of in-the-wild exploitation as of 2025-12-27.

What is the CVSS score for CVE-2020-36889?

CVE-2020-36889 has a CVSS score of 5.1 (MEDIUM severity). 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

How do I patch CVE-2020-36889?

Patch guidance is available from kentico security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-36889.

CVE-2020-36889 - remediation guidance & executive summary

Description

A stored cross-site scripting vulnerability in Kentico Xperience allows attackers to inject malicious scripts via error messages containing specially crafted object names. This allows malicious scripts to execute in users' browsers when administrators view error messages in the administration interface.

CVSS Metrics

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector: network
Complexity: low
Privileges: low
User Action: passive
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-79 · Cross-site Scripting (XSS)

Metadata

Primary Vendor: KENTICO
Published: 12/18/2025
Last Modified: 12/27/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2020-36889

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary