Mattermost versions 10.11.x <= 10.11.10 fail to validate user's authentication method when processing account auth type switch which allows an authenticated attacker to change account password without confirmation via falsely claiming a different auth provider.. Mattermost Advisory ID: MMSA-2026-00583

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Advisories

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Fixes

Solution

Update Mattermost to versions 11.4.0, 10.11.11 or higher.


Workaround

No workaround given by the vendor.

References
History

Tue, 17 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost
Vendors & Products Mattermost
Mattermost mattermost

Mon, 16 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 16 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Description Mattermost versions 10.11.x <= 10.11.10 fail to validate user's authentication method when processing account auth type switch which allows an authenticated attacker to change account password without confirmation via falsely claiming a different auth provider.. Mattermost Advisory ID: MMSA-2026-00583
Title Password Change Bypass via Auth Switch Endpoint
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2026-03-16T18:15:37.142Z

Reserved: 2026-02-13T10:01:31.957Z

Link: CVE-2026-22545

cve-icon Vulnrichment

Updated: 2026-03-16T18:15:31.615Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-16T15:16:21.123

Modified: 2026-03-17T14:20:01.670

Link: CVE-2026-22545

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-17T09:52:43Z

Weaknesses