CVE-2026-34721 — Zammad has Cross-site request forgery (CSRF) in OAuth callback endpoints
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 credentia…
Published: 2026-04-08 · CVSS: 5.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7