CVE-2021-47712

HIGH
Published Dec 18, 2025 Modified Dec 24, 2025 CWE-327

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.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-327 CWE-327

Affected Products

Vendor Product
kentico xperience

References

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-47712? +
CVE-2021-47712 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2021-47712? +
CVE-2021-47712 affects products from kentico, specifically: xperience. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2021-47712? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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