PT-2026-51345 · Mattermost · Mattermost
Published
2026-06-22
·
Updated
2026-06-22
·
CVE-2026-8823
CVSS v3.1
3.8
Low
| Vector | AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L |
Mattermost versions 11.7.x <= 11.7.0, 10.11.x <= 10.11.17 fail to validate bot targets when demoting users to guests which allows a lower-privileged administrator to degrade arbitrary bot accounts via the standard demote-user API.. Mattermost Advisory ID: MMSA-2026-00669
Fix
Incorrect Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Mattermost