CVE-2025-20033

Mattermost versions 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate post types, which allows attackers to deny service to users with the sysconsole_read_plugins permission via creating a post with the custom_pl_notification type and specific props.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://mattermost.com/security-updates	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::
	cpe:2.3:a:mattermost:mattermost_server::::::::

History

02 Oct 2025, 17:26

Type	Values Removed	Values Added
References	~~() https://mattermost.com/security-updates -~~	() https://mattermost.com/security-updates - Vendor Advisory
CPE		cpe:2.3:a:mattermost:mattermost_server::::::::
Summary		(es) Las versiones de Mattermost 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 no logran validar correctamente los tipos de publicaciones, lo que permite a los atacantes denegar el servicio a los usuarios con el permiso sysconsole_read_plugins mediante la creación de una publicación con el tipo custom_pl_notification y propiedades específicas.
First Time		Mattermost Mattermost mattermost Server

09 Jan 2025, 07:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-01-09 07:15

Updated : 2025-10-02 17:26

NVD link : CVE-2025-20033

Mitre link : CVE-2025-20033

CVE.ORG link : CVE-2025-20033

JSON object : View

Products Affected

mattermost

mattermost_server

CWE

CWE-1287

Improper Validation of Specified Type of Input

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