High severity · published Dec 18, 2025
CVE-2021-47712
Kentico Xperience <= 12.0.102 URL Hashing Cryptography Vulnerability
7.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XP
Xperience · Kentico
through 12.0.102 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47712
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-47712
Product
https://devnet.kentico.com/download/hotfixes
Third Party Advisory
https://www.vulncheck.com/advisories/kentico-xperience-url-hashing-cryptography-vulnerability
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