What’s Vulnerable › Vulnerabilities

CVE-2019-19493

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-02 · updated 2026-06-17
• Weakness: CWE-434

Description

Kentico before 12.0.50 allows file uploads in which the Content-Type header is inconsistent with the file extension, leading to XSS.

Affected products

• Kentico Xperience: from 9.0 before 12.0.50 — fixed in 12.0.50

How to fix

Upgrade to a fixed version: Kentico Xperience 12.0.50. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/159525/Kentico-CMS-9.0-12.0.49-Cross-Site-Scripting.html
• https://devnet.kentico.com/download/hotfixes
• http://packetstormsecurity.com/files/159525/Kentico-CMS-9.0-12.0.49-Cross-Site-Scripting.html
• https://devnet.kentico.com/download/hotfixes

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