Mattermost fails to properly restrict the access of files attached to posts

2024-02-2909:30:34

Google

osv.dev

mattermost

file access

archived channels

3.1 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

7 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.0%

JSON

Mattermost fails to properly restrict the access of files attached to posts in an archived channel, resulting in members being able to access files of archived channels even if the “Allow users to view archived channels” option is disabled.

CPENameOperatorVersion
github.com/mattermost/mattermost/server/v8lt9.4.2
github.com/mattermost/mattermost/server/v8lt8.1.9
github.com/mattermost/mattermost/server/v8ge9.0.0