Mattermost Denial of Service Vulnerability (CNVD-2023-9448306)

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. Mattermost suffers from a denial of service vulnerability that stems from an inability to properly limit the characters allowed in different fields of a block in Mattermost Boards, which can be exploited by an attacker to consume excessive resources by patching the fields of a block with specially crafted strings, resulting in a denial of service.