Vulnerability in Kentico Xperience
CVE-2021-47712
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.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Kentico Xperience — versions 0
Weakness classification (CWE)
References
- devnet.kentico.com/download/hotfixes (Product, vendor-advisory, patch)
- www.vulncheck.com/advisories/kentico-xperience-url-hashing-cryptography-vulnera… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47712?
- CVE-2021-47712 is a high-severity vulnerability in Kentico Xperience, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2025-12-18.
- How severe is CVE-2021-47712?
- High severity. CVSS v3 base score is 7.5 out of 10.