Kentico vulnerabilities
We track 8 vulnerabilities in Kentico products. 8 are rated high or critical, and 4 have been exploited in real attacks. The most recent was published on December 18, 2025.
Latest Kentico vulnerabilities
- 7.5 High severity
Xperience: Improper Neutralization of Server-Side Includes (SSI) Within a Web Page
A denial of service vulnerability in Kentico Xperience allows attackers to launch DoS attacks via specially crafted requests to the GetResource handler. Improper input validation enables remote attackers to potentially disrupt service availability through mali
- 7.5 High severity
Xperience: Generation of Error Message Containing Sensitive Information
An information disclosure vulnerability in Kentico Xperience allows attackers to view sensitive stack trace details via Portal Engine form control error messages. Detailed error messages can expose internal system information and potentially reveal implementat
- 9.8 Critical severity
Xperience: Unrestricted Upload of File with Dangerous Type
Kentico Xperience before 13.0.178 has a specific set of allowed ContentUploader file extensions for unauthenticated uploads; however, because .zip is processed through TryZipProviderSafe, there is additional functionality to create files with other extensions.
- 8.7 High severity
Xperience: Use of Externally-Controlled Input to Select Classes or Code
An unsafe reflection vulnerability in Kentico Xperience allows an unauthenticated attacker to kill the current process, leading to a Denial-of-Service condition. This issue affects Xperience: through 13.0.180.
- 7.2 High severity
Kentico Xperience Path Traversal Exploited
An authenticated remote code execution in Kentico Xperience allows authenticated users Staging Sync Server to upload arbitrary data to path relative locations. This results in path traversal and arbitrary file upload, including content that can be executed ser
- 9.8 Critical severity
Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel Exploited
An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server component password handling for the server defined None type. Authentication bypass allows an attacker to control administrative objects.This i
- 9.8 Critical severity
Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel Exploited
An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server password handling of empty SHA1 usernames in digest authentication. Authentication bypass allows an attacker to control administrative objects.
- 9.8 Critical severity
Kentico Xperience Deserialization of Untrusted Data Exploited
An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x versions. Due to a failure to validate security headers, it was possible for a specially crafted request to the staging service to bypass the initia