CVE-2026-34721 — Zammad has Cross-site request forgery (CSRF) in OAuth callback endpoints

CVE-2026-34721

Zammad has Cross-site request forgery (CSRF) in OAuth callback endpoints PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
zammad / zammad	affected < 6.5.4; affected >= 7.0.0-alpha, < 7.0.1

CWE

CWE-352

References

https://github.com/zammad/zammad/security/advisories/GHSA-mfwp-hx66-626c

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.