An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14456
Reference (s):
- https://mattermost.com/security-updates/