CVE-2026-26230

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

References

https://mattermost.com/security-updates

Details

Source: Mitre, NVD

Published: 2026-03-16

Updated: 2026-03-17

Risk Information

CVSS v2

Base Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:M/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 3.8

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

Severity: Low

EPSS

EPSS: 0.00023

Detections

Analytics