Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to perform proper input validation on post actions which allows an attacker to run a playbook checklist task command as another user via creating and sharing a deceptive post action that unexpectedly runs a slash command in some arbitrary channel.
References
History

Tue, 30 Sep 2025 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server

cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2024-05-26T13:32:56.087Z

Updated: 2024-08-02T03:37:03.667Z

Reserved: 2024-05-23T10:57:59.907Z

Link: CVE-2024-36255

cve-icon Vulnrichment

Updated: 2024-08-02T03:37:03.667Z

cve-icon NVD

Status : Analyzed

Published: 2024-05-26T14:15:10.060

Modified: 2025-09-30T15:29:54.477

Link: CVE-2024-36255

cve-icon Redhat

No data.