CVE-2026-8074 PUBLISHED

Improper Permission Check Allows User Manager to Deactivate Bot Accounts

Assigner: Mattermost
Reserved: 07.05.2026 Published: 22.06.2026 Updated: 22.06.2026

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

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
CVSS Score: 3.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	High	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Mattermost
Product	Mattermost
Versions	Default: unaffected affected from 11.7.0 to 11.7.0 (incl.) affected from 10.11.0 to 10.11.17 (incl.) Version 11.8.0 is unaffected Version 11.7.1 is unaffected Version 10.11.18 is unaffected

Solutions

Update Mattermost to versions 11.8.0, 11.7.1, 10.11.18 or higher.

Credits

hackit_bharat finder

References

MMSA-2026-00667

Problem Types

CWE-863: Incorrect Authorization CWE