Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-mqp8-pgg5-7x7m Mattermost allows system administrators to access password hashes and MFA secrets
Fixes

Solution

Update Mattermost to versions 11.0.0, 10.11.4, 10.5.12, 10.12.1 or higher.


Workaround

No workaround given by the vendor.

References
History

Mon, 01 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 19 Nov 2025 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server

Sat, 15 Nov 2025 21:30:00 +0000

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

Fri, 14 Nov 2025 11:00:00 +0000

Type Values Removed Values Added
Description Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint
Title Password hash and MFA secret returned in user email verification endpoint
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2025-12-01T15:36:58.365Z

Reserved: 2025-10-15T13:45:32.170Z

Link: CVE-2025-11794

cve-icon Vulnrichment

Updated: 2025-11-14T13:28:02.812Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-14T11:15:45.003

Modified: 2025-11-19T21:40:16.137

Link: CVE-2025-11794

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-15T21:25:33Z

Weaknesses