CVE-2020-26028: Zammad

Medium severity, CVSS 4.9. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in Zammad before 3.4.1. Admin Users without a ticket.* permission can access Tickets.

Affected products

• Zammad Zammad: from 1.0.0, before 3.4.1 (fixed in 3.4.1)

Published 2020-12-28. Last modified 2026-06-17.