CVE-2023-50454: Zammad

Medium severity, CVSS 5.9. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in Zammad before 6.2.0. In several subsystems, SSL/TLS was used to establish connections to external services without proper validation of hostname and certificate authority. This is exploitable by man-in-the-middle attackers.

Affected products

• Zammad Zammad: version 6.1.0 only; version 6.2.0 only

Published 2023-12-10. Last modified 2026-06-17.