CVE-2023-6459

MEDIUM5.3EPSS 0.49%

Mattermost Exposure of Sensitive Information to an Unauthorized Actor vulnerability

Published: 12/6/2023Modified: 2/4/2026

Also known as:GHSA-63cv-4pc2-4fcfBIT-mattermost-2023-6459CGA-rvwq-mq34-6ghh

Description

Mattermost is grouping calls in the /metrics endpoint by id and reports that id in the response. Since this id is the channelID, the public /metrics endpoint is revealing channelIDs.

Affected packages (3)

Bitnami/mattermostfrom 0, < 7.8.14, >= 8.0.0, < 8.1.5
Go/github.com/mattermost/mattermost-server/v6from 0, < 7.8.14
Go/github.com/mattermost/mattermost/server/v8from 0, < 8.1.5

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References (3)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-6459
PATCHhttps://github.com/mattermost/mattermost
WEBhttps://mattermost.com/security-updates