title: IDOR when updating the tasks of a private playbook run
description: Mattermost fails to check whether a user is a guest when updating the tasks of a private playbook run allowing a guest to update the tasks of a private playbook run if they know the run ID.
problem types: CWE-284: Improper Access Control
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
lessThanOrEqual: 7.8.14, 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
status: unaffected, version: 7.8.15
}
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 Server to versions 9.2.2, 8.1.6, 9.0.4, 9.1.3, 7.8.15 or higher.