Detections
Analytics

Mattermost Server 10.5.x < 10.5.11 / 10.10.x < 10.10.3 / 10.11.x 10.11.2 / 10.12.0 Multiple Vulnerabilities (MMSA-2025-00507, MMSA-2025-00508)

high Nessus Plugin ID 271810

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Synopsis

The remote host is missing a security update.

Description

The version of Mattermost Server installed on the remote host is affected by multiple vulnerabilities as referenced in the MMSA-2025-00507, MMSA-2025-00508 advisories.

 - Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.3, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the OAuth state. (CVE-2025-58073)

 - Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.3, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState. (CVE-2025-58075)

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 10.5.11, 10.10.3, 10.11.2, 10.12.0 or later.

See Also

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

Plugin Details

Severity: High

ID: 271810

File Name: mattermost_server_MMSA-2025-00507_MMSA-2025-00508.nasl

Version: 1.1

Type: remote

Family: CGI abuses

Published: 10/28/2025

Updated: 10/28/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 8.5

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

CVSS Score Source: CVE-2025-58075

CVSS v3

Risk Factor: High

Base Score: 8.1

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

Vulnerability Information

CPE: cpe:/a:mattermost:mattermost_server

Required KB Items: installed_sw/Mattermost Server

Patch Publication Date: 10/16/2025

Vulnerability Publication Date: 10/16/2025

Reference Information

CVE: CVE-2025-58073, CVE-2025-58075

IAVA: 2025-A-0779