Auth bypass in Kentico Xperience
CVE-2020-36890
An access control bypass vulnerability in Kentico Xperience allows administrators to modify global administrator user privileges via unauthorized requests. Attackers could potentially compromise global administrator accounts and invalidate security-sensitive macros by manipulating user privilege levels.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · 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-administrator-access-control-byp… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-36890?
- CVE-2020-36890 is a high-severity vulnerability in Kentico Xperience, classified under Missing Authorization. CVSS score: 7.2/10. Published 2025-12-18.
- How severe is CVE-2020-36890?
- High severity. CVSS v3 base score is 7.2 out of 10.