title: Umbraco CMS vulnerable to Privilege Escalation using Spoofing
description: Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, users with low privileges (Editor, etc.) are able to access some unintended endpoints. Versions 8.18.10, 10.8.1, and 12.3.4 contain a patch for this issue.
problem types: CWE-863: Incorrect Authorization
affected:
{
vendor: umbraco
product: Umbraco-CMS
versions:
version: >= 8.0.0, < 8.18.10, status: affected
version: >= 9.0.0-rc001, < 10.8.1, status: affected
version: >= 11.0.0-rc1, < 12.3.4, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.4
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
version: 3.1
]