CVE-2022-48021: Zammad

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability in Zammad v5.3.0 allows attackers to execute arbitrary code or escalate privileges via a crafted message sent to the server.

Affected products

• Zammad Zammad: version 5.3.0 only

Published 2023-02-03. Last modified 2026-06-17.