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.
Published: 2025-12-18
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 27 Dec 2025 17:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N'}

 cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Thu, 18 Dec 2025 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 18 Dec 2025 20:00:00 +0000

Type Values Removed Values Added
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.
Title Kentico Xperience <= 12.0.49 File Upload Stored XSS
First Time appeared Kentico
Kentico xperience
Weaknesses CWE-79
CPEs cpe:2.3:a:kentico:xperience:*:*:*:*:*:*:*:*
Vendors & Products Kentico
Kentico xperience
References
Metrics cvssV3_1

{'score': 4.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, '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'}

Subscriptions

Kentico Xperience
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2025-12-30T14:09:07.104Z

Reserved: 2025-12-09T11:05:19.896Z

Link: CVE-2020-36891

cve-icon Vulnrichment

Updated: 2025-12-18T21:09:00.634Z

cve-icon NVD

Status : Modified

Published: 2025-12-18T20:15:49.490

Modified: 2025-12-27T17:15:40.160

Link: CVE-2020-36891

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses