CVE-2019-20888

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 5.7 Mattermost Server version 5.6.3 and earlier Mattermost Server version 5.5.2 and earlier Mattermost Server version 4.10.5 and earlier

Description An issue in Mattermost Server allows attackers to cause a denial of service, specifically memory consumption, through either an outgoing webhook or a slash command integration.

Recommendations For versions prior to 5.7, update to version 5.7 or later. For version 5.6.3 and earlier, update to version 5.6.4 or later, or to version 5.7 or later. For version 5.5.2 and earlier, update to version 5.5.3 or later, or to version 5.7 or later. For version 4.10.5 and earlier, update to version 4.10.6 or later, or to version 5.7 or later.