Detections
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Mattermost Server 9.11.x < 9.11.9 (MMSA-2024-00409)

low Nessus Plugin ID 233451

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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 prior to 9.11.9. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00409 advisory.

 - Mattermost versions 9.11.x <= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them. (CVE-2025-27715)

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 9.11.9, 10.5.0, or later.

See Also

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

Plugin Details

Severity: Low

ID: 233451

File Name: mattermost_server_MMSA-2024-00409.nasl

Version: 1.1

Type: remote

Family: CGI abuses

Published: 3/28/2025

Updated: 3/28/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.9

CVSS v2

Risk Factor: Low

Base Score: 3.2

Temporal Score: 2.4

Vector: CVSS2#AV:N/AC:H/Au:M/C:P/I:P/A:N

CVSS Score Source: CVE-2025-27715

CVSS v3

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.9

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

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

Vulnerability Information

CPE: cpe:/a:mattermost:mattermost_server

Required KB Items: installed_sw/Mattermost Server

Exploit Ease: No known exploits are available

Patch Publication Date: 2/19/2025

Vulnerability Publication Date: 3/21/2025

Reference Information

CVE: CVE-2025-27715

IAVA: 2025-A-0195