What’s Vulnerable › Vulnerabilities
CVE-2020-14457
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-06-19 · updated 2026-06-17
Description
An issue was discovered in Mattermost Server before 5.20.0. Non-members can receive broadcasted team details via the update_team WebSocket event, aka MMSA-2020-0012.
Affected products
- Mattermost: before 5.20.0 — fixed in 5.20.0
How to fix
Upgrade to a fixed version: Mattermost 5.20.0. Check the vendor advisory for mitigations.
References
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