CVE-2026-9820 — Mattermost schemes teams endpoint exposes private team invite IDs
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 …
Published: 2026-07-13 · CVSS: 3.8 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7