CVE-2026-26230

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Source
https://cve.org/CVERecord?id=CVE-2026-26230
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26230.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-26230
Published
2026-03-16T21:16:33.480Z
Modified
2026-04-10T05:41:00.081438Z
Severity
  • 3.8 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

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

Affected packages

Git / github.com/mattermost/mattermost-server

Affected ranges

Type
GIT
Repo
https://github.com/mattermost/mattermost-server
Events
Introduced
5b955468ea1ea8b56c0fb10feb258a36a767d7bb
Fixed
fddd4a70bcb32eaff394a2fa5399efcd1b2ae251
Database specific 
{
    "versions": [
        {
            "introduced": "10.11.0"
        },
        {
            "fixed": "10.11.11"
        }
    ]
}

Affected versions

@mattermost/client@10.*
@mattermost/client@10.11.0
@mattermost/types@10.*
@mattermost/types@10.11.0
mattermost-redux@10.*
mattermost-redux@10.11.0
v10.*
v10.11.0
v10.11.0-rc3
v10.11.1
v10.11.1-rc1
v10.11.10
v10.11.11-rc1
v10.11.2
v10.11.2-rc1
v10.11.2-rc2
v10.11.3
v10.11.4
v10.11.4-rc1
v10.11.4-rc2
v10.11.4-rc3
v10.11.5
v10.11.6
v10.11.7
v10.11.8
v10.11.9
v10.11.9-rc1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26230.json"