CVE-2026-34720
Zammad has an origin validation error in SSO mechanism
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
5th
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.
| CWE | CWE-346 |
| Vendor | zammad |
| Product | zammad |
| Published | Apr 8, 2026 |
| Last Updated | Apr 9, 2026 |
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Affected Versions
zammad / zammad
< 6.5.4 >= 7.0.0-alpha, < 7.0.1