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CVE-2026-26230
Published: Mar 16, 2026
Modified: Mar 17, 2026
PUBLISHED
CVSS v3.1
3.8
LOW
Description
Mattermost versions 10.11.x <= 10.11.10 fail to properly validate permission requirements in the team member roles API endpoint which allows team administrators to demote members to guest role. Mattermost Advisory ID: MMSA-2025-00531
| Vendor | Product | Versions |
|---|---|---|
Mattermost | Mattermost | affected 10.11.0 - <= 10.11.10unaffected 11.4.0unaffected 10.11.11 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
References
MMSA-2025-00531
vendor-advisory
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