CVE-2026-34723: Zammad

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, unauthenticated remote attackers were able to access the getting started endpoint to get access to sensitive internal entity data, even after the system setup was completed. This vulnerability is fixed in 7.0.1 and 6.5.4.

Affected products

• Zammad Zammad: before 6.5.4 (fixed in 6.5.4); version 7.0.0 only

Published 2026-04-08. Last modified 2026-07-24.