CVE-2026-9820

CVE-2026-9820CVE-2026-9820

mattermost / mattermost_server

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

Scoring

CVSS 3.8 ()
VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Last modified2026-07-13
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.