CVE-2026-2476

HIGH7.6EPSS 0.04%

Mattermost Microsoft Teams Plugin fails to properly mask sensitive configuration values

Published: 3/16/2026Modified: 3/23/2026

Also known as:GHSA-4ppj-6chv-5pgcGO-2026-4784

Description

Mattermost Plugins versions <=2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported configuration data. Mattermost Advisory ID: MMSA-2026-00606

Affected packages (2)

Go/github.com/mattermost/mattermost-plugin-msteamsfrom 0, < 1.15.1-0.20260102165339-036c761bd3cb
Go/github.com/mattermost/mattermost-plugin-msteamsfrom 0, < 1.15.1-0.20260102165339-036c761bd3cb

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH7.6	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

References (5)

ADVISORYhttps://github.com/advisories/GHSA-4ppj-6chv-5pgc
ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-2476
PATCHhttps://github.com/mattermost/mattermost-plugin-msteams
WEBhttps://github.com/mattermost/mattermost-plugin-msteams/commit/036c761bd3cb9ece92c17f2b151dfa906cebdcf6
WEBhttps://mattermost.com/security-updates