title: Playbooks lets you edit arbitrary posts
description: When creating a playbook run via the /dialog API, Mattermost fails to validate all parameters, allowing an authenticated attacker to edit an arbitrary channel post.
problem types: CWE-862 Missing Authorization
affected:
{
defaultStatus: unaffected
product: Mattermost
vendor: Mattermost
versions:
lessThan: 7.9.2, status: affected, version: 0, versionType: semver
lessThan: 7.8.3, status: affected, version: 0, versionType: semver
lessThan: 7.7.4, status: affected, version: 0, versionType: semver
lessThan: 7.10.1, status: affected, version: 0, versionType: semver
status: unaffected, version: 7.9.2
status: unaffected, version: 7.8.3
status: unaffected, version: 7.7.4
status: unaffected, version: 7.10.1
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 4.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: LOW
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Update Mattermost to version v7.7.4, v7.8.3, v7.9.2, v7.10.1, or higher.