title: Password of talk conversations can be bruteforced in Nextcloud
description: Nextcloud talk is a chat module for the Nextcloud server platform. In affected versions brute force protection of public talk conversation passwords can be bypassed, as there was an endpoint validating the conversation password without registering bruteforce attempts. It is recommended that the Nextcloud Talk app is upgraded to 15.0.8, 16.0.6 or 17.1.1. There are no known workarounds for this vulnerability.
problem types: CWE-307: Improper Restriction of Excessive Authentication Attempts
affected:
{
vendor: nextcloud
product: security-advisories
versions:
version: >= 15.0.0, < 15.0.8, status: affected
version: >= 16.0.0, < 16.0.6, status: affected
version: >= 17.0.0, < 17.1.1, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 4.3
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
version: 3.1
]