medium6.5
CVE-2026-34721
Zammad is a web based open source helpdesk/customer support system.
Impact
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 versions |
|---|---|---|
| Zammad | Zammad | before 6.5.4 Version 7.0.0 |