Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kentico | Xperience | >= 13.0.0, <= 13.0.43 |
Related Weaknesses (CWE)
References
- https://appcheck-ng.com/persistent-xss-kentico-cms/ExploitThird Party Advisory
- https://appcheck-ng.com/persistent-xss-kentico-cms/ExploitThird Party Advisory
FAQ
What is CVE-2021-43991?
CVE-2021-43991 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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...
How severe is CVE-2021-43991?
CVE-2021-43991 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-43991?
Check the references section above for vendor advisories and patch information. Affected products include: Kentico Xperience.