BaseFortify

Publication date: 2025-11-14

Last updated on: 2025-11-19

Assigner: Mattermost, Inc.

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

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-11-14

Last Modified

2025-11-19

Generated

2026-07-06

AI Q&A

2025-11-14

EPSS Evaluated

2026-07-05

NVD

CVE-2025-11794

Affected Vendors & Products

Vendor	Product	Version / Range
mattermost	mattermost_server	From 10.5.0 (inc) to 10.5.12 (exc)
mattermost	mattermost_server	From 10.11.0 (inc) to 10.11.4 (exc)
mattermost	mattermost_server	From 10.12.0 (inc) to 10.12.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability exists in certain Mattermost versions where user data is not properly sanitized. This flaw allows system administrators to access sensitive information such as password hashes and multi-factor authentication (MFA) secrets through a specific API endpoint.

Impact Analysis

The vulnerability can lead to unauthorized access to sensitive authentication data by system administrators, potentially compromising user accounts by exposing password hashes and MFA secrets. This could result in account takeover or other security breaches.

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