Mattermost Exposure of Sensitive Information to an Unauthorized Actor vulnerability

2023-11-2712:30:54

Google

osv.dev

mattermost

vulnerability

unauthorized access

archived channels

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.6

Confidence

High

EPSS

Percentile

14.0%

JSON

Mattermost fails to check whether the “Allow users to view archived channels” setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the “Allow users to view archived channels” setting is disabled.