CVE-2025-53857

LOW3.7EPSS 0.06%

Mattermost Confluence Plugin has Missing Authorization vulnerability

Published: 8/11/2025Modified: 8/18/2025

Also known as:GHSA-42m6-5vm7-fjv2GO-2025-3864

Description

Mattermost Confluence Plugin versions < 1.5.0 fail to check user access to the channel, allowing attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.

Affected packages (2)

Go/github.com/mattermost/mattermost-plugin-confluencefrom 0, < 1.5.0
Go/github.com/mattermost/mattermost-plugin-confluencefrom 0, < 1.5.0

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	LOW3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

References (4)

ADVISORYhttps://github.com/advisories/GHSA-42m6-5vm7-fjv2
ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-53857
PATCHhttps://github.com/mattermost/mattermost-plugin-confluence
WEBhttps://mattermost.com/security-updates