Security Advisory

CVE-2026-9820

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-13 10:51:34

Last updated 2026-07-13 13:09:31

Assigner Mattermost

CVSS score 3.8

State PUBLISHED

Description

Mattermost versions 11.7.x <= 11.7.2, 10.11.x <= 10.11.19 fail to sanitize team objects returned by the scheme teams endpoint, which allows a user with the User Manager role to obtain invite links for private teams and use them to join or share access to those teams via the scheme teams API endpoint.. Mattermost Advisory ID: MMSA-2026-00671

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