CVE-2020-14460: Mattermost Server

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue was discovered in Mattermost Server before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8. Creation of a trusted OAuth application does not always require admin privileges, aka MMSA-2020-0001.

Affected products

• Mattermost Mattermost Server: before 5.9.8 (fixed in 5.9.8); from 5.16.0, before 5.16.5 (fixed in 5.16.5); from 5.17.0, before 5.17.3 (fixed in 5.17.3); from 5.18.0, before 5.18.1 (fixed in 5.18.1); version 5.19.0 only

Published 2020-06-19. Last modified 2026-06-17.