CVE-2025-20033

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CVSS 3.1

6.5 medium

EPSS

<1%p47

Published

Jan 9, 2025 (Jan 9, 2025)

Modified

Jun 17, 2026

Description

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.

Vendors: mattermost
Products: mattermost server
Weakness: CWE-1287
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.6%)

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