CVE-2018-21253

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 5.1 Mattermost Server version 5.0.2 and earlier Mattermost Server version 4.10.2 and earlier

Description An issue was discovered in Mattermost Server. An attacker could use the invite people slash command to invite a non-permitted user.

Recommendations For versions prior to 5.1, update to version 5.1 or later. For version 5.0.2 and earlier, update to version 5.0.3 or later. For version 4.10.2 and earlier, update to version 4.10.3 or later. As a temporary workaround, consider restricting the use of the invite people slash command until a patch is available.