Claverrat

**Name of the Vulnerable Software and Affected Versions** Mattermost (affected versions not specified) **Description** The issue allows an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters, due to Mattermost's failure to unescape Markdown strings in a memory-efficient way. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.