Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the OAuth callback endpoints for Microsoft, Google, and Facebook external credentials do not validate a CSRF state parameter. This vulnerability is fixed in 7.0.1 and 6.5.4.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| zammad | zammad | < 6.5.4, >= 7.0.0-alpha, < 7.0.1 | — |
Advisories 1
- WID-SEC-2026-1000 Zammad: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 8, 2026