CVE-2023-5968

Mattermost fails to properly sanitize the user object when updating the username, resulting in the password hash being included in the response body.

CVE-2023-5969

Mattermost fails to properly sanitize the request to /api/v4/redirect_location allowing an attacker, sending a specially crafted request to /api/v4/redirect_location, to fill up the memory due to caching large items.