Global infos:

Mattermost versions 9.5.x <= 9.5.9 fail to properly filter the channel data when ElasticSearch is enabled which allows a user to get private channel names by using cmd+K/ctrl+K.

CVE Status: Awaiting Analysis

References:

[email protected]

Metrics:

Attribute	Value
Attack Complexity	LOW
Attack Vector	NETWORK
Availability Impact	NONE
Base Score	4.3
Base Severity	MEDIUM
Confidentiality Impact	LOW
Integrity Impact	NONE
Privileges Required	LOW
Scope	UNCHANGED
User Interaction	NONE
Vector String	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Exploitability Score	2.8
Impact Score	1.4
Source	[email protected]
Type	Secondary

Links:

Exploit-db
Github