CVE-2021-42137: Zammad

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue was discovered in Zammad before 5.0.1. In some cases, there is improper enforcement of the privilege requirement for viewing a list of tickets that shows title, state, etc.

Affected products

• Zammad Zammad: before 5.0.1 (fixed in 5.0.1)

Published 2021-10-11. Last modified 2026-06-17.