CVE-2026-8074

LOW

Improper Permission Check Allows User Manager to Deactivate Bot Accounts

Title source: cna
STIX 2.1

Description

Mattermost versions 11.7.x <= 11.7.0, 10.11.x <= 10.11.17 fail to enforce bot-specific permission checks on the user active status endpoint, which allows a User Manager with user management write access but no Integrations access to deactivate bot accounts via the PUT /api/v4/users/{id}/active API endpoint.. Mattermost Advisory ID: MMSA-2026-00667

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory
MMSA-2026-00667
https://mattermost.com/security-updates

Scores

CVSS v3 3.8
EPSS 0.0019
EPSS Percentile 9.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-863
Status published
Products (6)
Mattermost/Mattermost 10.11.0 - 10.11.17
Mattermost/Mattermost 10.11.18
Mattermost/Mattermost 11.7.0
Mattermost/Mattermost 11.7.1
Mattermost/Mattermost 11.8.0
mattermost/mattermost_server 10.11.0 - 10.11.18
Published Jun 22, 2026
Tracked Since Jun 22, 2026