title: Inaccessible Post Information Leak via Run Timeline IDOR
description: Mattermost fails to perform authorization checks in the  /plugins/playbooks/api/v0/runs/add-to-timeline-dialog endpoint of the Playbooks plugin allowing an attacker to get limited information about a post if they know the post ID
problem types: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
affected:
{
defaultStatus: unaffected
product: Mattermost
vendor: Mattermost
versions:
lessThanOrEqual: 8.1.5, status: affected, version: 0, versionType: semver
lessThanOrEqual: 9.0.3, status: affected, version: 0, versionType: semver
lessThanOrEqual: 9.1.2, status: affected, version: 0, versionType: semver
lessThanOrEqual: 9.2.1, status: affected, version: 0, versionType: semver
status: unaffected, version: 9.2.2
status: unaffected, version: 8.1.6
status: unaffected, version: 9.0.4
status: unaffected, version: 9.1.3
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Update Mattermost Server to versions 8.1.6, 9.0.4, 9.1.3, 9.2.2 or higher.