Vulnerabilities > CVE-2021-37862 - Improper Check for Unusual or Exceptional Conditions vulnerability in Mattermost Server
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
NONE Summary
Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.