Detections
Analytics

Mattermost Server 9.11.x < 9.11.8 / 10.2.x < 10.2.3 / 10.3.x < 10.3.3 / 10.4.x < 10.4.2 (MMSA-2025-00430)

high Nessus Plugin ID 216937

Language:

Synopsis

The remote host is missing a security update.

Description

The version of Mattermost Server installed on the remote host is prior to 9.11.8, 10.2.3, 10.3.3, or 10.4.2. It is, therefore, affected by a vulnerability as referenced in the MMSA-2025-00430 advisory.

 - Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate board blocks when importing boards which allows an attacker could read any arbitrary file on the system via importing and exporting a specially crafted import archive in Boards.
 (CVE-2025-25279)

 - Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate input when patching and duplicating a board, which allows a user to read any arbitrary file on the system via duplicating a specially crafted block in Boards. (CVE-2025-20051)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Mattermost Server version 9.11.8 / 10.2.3 / 10.3.3 / 10.4.2 or later.

See Also

https://mattermost.com/security-updates/

Plugin Details

Severity: High

ID: 216937

File Name: mattermost_server_MMSA-2025-00430.nasl

Version: 1.4

Type: remote

Family: CGI abuses

Published: 2/28/2025

Updated: 10/3/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2025-25279

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mattermost:mattermost_server

Required KB Items: installed_sw/Mattermost Server

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2/24/2025

Reference Information

CVE: CVE-2025-20051, CVE-2025-25279

IAVB: 2025-A-0133-S