Vulnerability · Published Dec 3, 2021 · Assigned by AppCheck
CVE-2021-43991Persistent XSS via Avatar Upload in Kentico Xperience CMS
Medium 6.8
In plain English
A medium-severity cross-site scripting in Kentico Xperience XMS from Kentico. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Official description
The Kentico Xperience CMS version 13.0 – 13.0.43 is vulnerable to a persistent Cross-Site Scripting (XSS) vulnerability (also known as Stored or Second-Order XSS). Persistent XSS vulnerabilities occur when the application stores and retrieves client supplied data without proper handling of dangerous content. This type of XSS vulnerability is exploited by submitting malicious script content to the application which is then retrieved and executed by other application users. The attacker could exploit this to conduct a range of attacks against users of the affected application such as session hijacking, account take over and accessing sensitive data.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Kentico | Kentico Xperience XMS | 13.0 – before 13.0.43 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
References
- https://appcheck-ng.com/persistent-xss-kentico-cms/ x_refsource_MISC