title: A guest user can perform various actions on public playbooks
description: Mattermost fails to check if the requesting user is a guest before performing different actions to public playbooks, resulting a guest being able to view, join, edit, export and archive public playbooks.
problem types: CWE-862 Missing Authorization
affected:
{
defaultStatus: unaffected
product: Mattermost
vendor: Mattermost
versions:
lessThanOrEqual: 7.8.7, status: affected, version: 0, versionType: semver
lessThanOrEqual: 7.9.5, status: affected, version: 0, versionType: semver
lessThanOrEqual: 7.10.3, status: affected, version: 0, versionType: semver
status: unaffected, version: 7.8.8
status: unaffected, version: 7.9.6
status: unaffected, version: 7.10.4
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 6.3
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:L
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Update Mattermost Server to versions 7.8.8, 7.9.5, 7.10.4 or higher. Otherwise, update the Playbooks plugin to version v1.37.0 or higher.