CVE-2020-36890: An access control bypass vulnerability in Kentico Xperience allows administrators to modify global administrat

Q: How do I fix CVE-2020-36890?

xperience: upgrade to newer than 12.0.60. Exact commands for each OS are on this page.

Q: Is CVE-2020-36890 being exploited?

CVE-2020-36890 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-36890 affect?

CVE-2020-36890 affects xperience. Severity is high (CVSS 7.2). 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

Routine

HIGH 7.2UPGRADE

CVE-2020-36890 is a high-severity flaw (CVSS 7.2) affecting xperience. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-862
Published	2025-12-18
Last modified	2026-08-10

Publisher (CNA): VulnCheck · Vendor: kentico

Last updated 2026-08-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-18 20:15 UTCPublished CVE record published
2026-08-10 18:17 UTCUpdated Record last modified

kentico xperience UPGRADE

Affected: <= 12.0.60

Fixed in: newer than 12.0.60

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xperience || rpm -q xperience || xperience --version

2. UPGRADE to newer than 12.0.60 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xperience

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xperience

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-36890?

xperience: upgrade to newer than 12.0.60. Exact commands for each OS are on this page.

Is CVE-2020-36890 being exploited?

CVE-2020-36890 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-36890 affect?

CVE-2020-36890 affects xperience. Severity is high (CVSS 7.2). 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

How urgent is CVE-2020-36890?

Priority 32/100. High severity

Related CVEs

CVE-2025-5591 MEDIUM 5.4 UPGRADE Kentico Xperience 13 is vulnerable to a stored cross-site scripting attack via a form component, allowing an a
CVE-2025-32370 HIGH 7.2 UPGRADE Kentico Xperience before 13.0.178 has a specific set of allowed ContentUploader file extensions for unauthenti
CVE-2025-32369 MEDIUM 6.4 UPGRADE Kentico Xperience before 13.0.181 allows authenticated users to distribute malicious content (for stored XSS)
CVE-2025-2794 HIGH 8.7 UPGRADE An unsafe reflection vulnerability in Kentico Xperience allows an unauthenticated attacker to kill the current
CVE-2025-2749 HIGH 7.2 EXPLOITED UPGRADE Kentico Xperience Path Traversal Vulnerability

References

← Back to latest CVEs