title: Attachment of deleted message in a thread remains accessible and downloadable
description: Mattermost fails to delete the attachments when deleting a message in a thread allowing a simple user to still be able to access and download the attachment of a deleted message
problem types: CWE-862 Missing Authorization
affected:
{
defaultStatus: affected
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: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 3.1
baseSeverity: LOW
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Update Mattermost Server to versions 7.10.4, 7.9.6, 7.8.8 or higher