Mattermost Server < 7.8.5 / 7.9.x < 7.9.4 / 7.10.x < 7.10.1 Missing Authorization (MMSA-2023-00151)

medium Nessus Plugin ID 179638


A web application running on the remote server is affected by an missing authorization vulnerability.


The version of Mattermost Server running on the remote host is prior to 7.8.5, 7.9.x prior to 7.9.4 or 7.10.x prior to 7.10.1. It is, therefore, affected by a missing authorization vulnerability. Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps.

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


Upgrade to Mattermost Server version 7.8.5, 7.9.4, 7.10.1 or later.

See Also

Plugin Details

Severity: Medium

ID: 179638

File Name: mattermost_server_mmsa-2023-00151.nasl

Version: 1.3

Type: remote

Family: CGI abuses

Published: 8/10/2023

Updated: 8/18/2023

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 1.4


Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2023-2783


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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: 6/16/2023

Vulnerability Publication Date: 6/16/2023

Reference Information

CVE: CVE-2023-2783

IAVA: 2023-A-0394-S