CVE-2026-2476 HIGH

CVE-2026-2476: MS Teams plugin sensitive config values not properly masked in support packets

Vendor Mattermost
Product Mattermost
Weakness CWE-200 · Info exposure
Published March 16, 2026
Last update March 16, 2026
View on NVD All CVEs

CVSS base score

7.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

March 16, 2026 CVE published
March 16, 2026 Record updated