Access Control Bypass in Kentico Xperience Affects Administrator Privileges
CVE-2020-36890

8.6HIGH

Key Information:

Vendor

Kentico

Status
Xperience
Vendor
CVE Published:
18 December 2025

What is CVE-2020-36890?

An access control bypass issue in Kentico Xperience enables unauthorized alterations in global administrator user privileges. Attackers can exploit this flaw to alter user privilege levels, potentially compromising global administrator accounts. This vulnerability poses a significant risk as it may allow the manipulation of security-sensitive macros, undermining essential security measures.

Affected Version(s)

Xperience 0 <= 12.0.60

References

https://devnet.kentico.com/download/hotfixes
vendor-advisorypatch
https://www.vulncheck.com/advisories/kentico-xperience-ad...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Denis Styopochkin - Security Engineer, SoftServe
JSON
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CVE-2020-36890 : Access Control Bypass in Kentico Xperience Affects Administrator Privileges