An issue was discovered in Mattermost Server before 5.22.0. The markdown renderer allows attackers to cause a denial of service (client-side), aka MMSA-2020-0017.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14450
Reference (s):
- https://mattermost.com/security-updates/