CVE-2017-18920

High

9.8/10

Summary

An issue was discovered in Mattermost Server before 3.6.2. The WebSocket feature does not follow the Same Origin Policy.

Attack Complexity: LOW
Attack Vector: NETWORK
Integrity Impact: HIGH
Scope: UNCHANGED
User Interaction: NONE
Privileges Required: NONE
Confidentiality Impact: HIGH
Availability Impact: HIGH

References

Advisory Timeline

Published Jun 19, 2020