CVE-2020-36891
mediumpriority · track · 22EPSS 0.002 · 12 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.2–5.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://devnet.kentico.com/download/hotfixescnnvd
- https://www.vulncheck.com/advisories/kentico-xperience-file-upload-stored-xsscnnvd
- https://devnet.kentico.com/download/hotfixesenisa_euvd
- https://www.vulncheck.com/advisories/kentico-xperience-file-upload-stored-xssenisa_euvd
- https://devnet.kentico.com/download/hotfixesProductnvd
- https://www.vulncheck.com/advisories/kentico-xperience-file-upload-stored-xssThird Party Advisorynvd
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