CVE-2026-34720
Medium · 4.3CVSS
4.3
EPSS
0.1%
Published
Apr 8, 2026
CISA due date
—
The record
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the SSO mechanism in Zammad was not verifying the header originates from a trusted SSO proxy/gateway before applying further actions on it. This vulnerability is fixed in 7.0.1 and 6.5.4.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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