title: All users can reset the allowed apps list for Nextcloud Guest App users
description: Nextcloud guests app is a utility to create guest users which can only see files shared with them. In affected versions users could change the allowed list of apps, allowing them to use apps that were not intended to be used. It is recommended that the Guests app is upgraded to 2.4.1, 2.5.1 or 3.0.1. There are no known workarounds for this vulnerability.
problem types: CWE-281: Improper Preservation of Permissions
affected:
{
vendor: nextcloud
product: security-advisories
versions:
version: >= 2.4.0, < 2.4.1, status: affected
version: >= 2.5.0, < 2.5.1, status: affected
version: >= 3.0.0, < 3.0.1, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 4.1
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: LOW
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
version: 3.1
]