CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
9.0%
Mattermost is vulnerable to Cross-site Request Forgery (CSRF). The vulnerability is due to a failure to validate post actions properly, allowing an attacker to run a playbook checklist task command as another user by creating and sharing a deceptive post action that unexpectedly runs a slash command in an arbitrary channel.