CVE-2021-37862 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Reference

https://mattermost.com/security-updates/ https://hackerone.com/reports/1357013

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

5.4