title: Nextcloud Server and Enterprise Server missing brute force protection on password confirmation modal
description: Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform, and Nextcloud Enterprise Server is the enterprise version of the file server software. In Nextcloud Server versions 25.0.x prior to 25.0.5 and versions 24.0.x prior to 24.0.10 as well as Nextcloud Enterprise Server versions 25.0.x prior to 25.0.4, 24.0.x prior to 24.0.10, 23.0.x prior to 23.0.12.5, 22.x prior to 22.2.0.10, and 21.x prior to 21.0.9.10, when an attacker gets access to an already logged in user session they can then brute force the password on the confirmation endpoint. Nextcloud Server should upgraded to 24.0.10 or 25.0.4 and Nextcloud Enterprise Server should upgraded to 21.0.9.10, 22.2.10.10, 23.0.12.5, 24.0.10, or 25.0.4 to receive a patch. No known workarounds are available.
problem types: CWE-307: Improper Restriction of Excessive Authentication Attempts
affected:
{
vendor: nextcloud
product: security-advisories
versions:
version: Nextcloud Server >= 24.0.0, < 24.0.10, status: affected
version: Nextcloud Server >= 25.0.0, < 25.0.4, status: affected
version: Nextcloud Enterprise Server >= 25.0.0, < 25.0.4, status: affected
version: Nextcloud Enterprise Server >= 24.0.0, < 24.0.10, status: affected
version: Nextcloud Enterprise Server >= 23.0.0, < 23.0.12.5, status: affected
version: Nextcloud Enterprise Server >= 22.0.0, < 22.2.10.10, status: affected
version: Nextcloud Enterprise Server >= 21.0.0, < 21.0.9.10, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: LOW
baseScore: 4.2
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
version: 3.1
]