CVE-2021-47712 Kentico Xperience <= 12.0.102 URL Hashing Cryptography Vulnerability
Attackers can manipulate URL hash values due to weak cryptography, potentially bypassing security controls in Kentico Xperience.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-47712?
CVE-2021-47712 is a medium-severity vulnerability in Kentico Xperience, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A cryptography vulnerability in Kentico Xperience allows attackers to potentially manipulate URL hash values through existing hashing mechanisms. The hotfix introduces an additional security layer to prevent hash value reuse and potential exploitation.
Weakness: CWE-327
Which versions are affected by CVE-2021-47712?
It affects 1 product.
Products include Kentico Xperience.
How do I fix CVE-2021-47712?
No fix has been published for CVE-2021-47712 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47712 being exploited?
There is no known exploitation of CVE-2021-47712 in the wild and no public exploit code.
Other vulnerabilities in Kentico Xperience
- CVE-2025-2746 Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel
- CVE-2025-2747 Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel
- CVE-2019-10068 Kentico Xperience Deserialization of Untrusted Data
- CVE-2025-2749 Kentico Xperience Path Traversal
- CVE-2017-17736 Missing authorization in n/a
Sources
Also known as GHSA-9jrm-mcr7-5p6m.