cvedb.io
CVE-2026-34718
MEDIUM · CVSS 6.1
EPSS exploitation probability: 0%
Published 2026-04-08T19:25:21.863 · Last modified 2026-06-17T10:39:30.040

Summary

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the HTML sanitizer for ticket articles was missing proper sanitization of data: ... URI schemes, resulting in storing such malicious content in the database of the Zammad instance. The Zammad GUI is rendering this content, due to applied CSP rules no harm was done by e.g., clicking such a link. This vulnerability is fixed in 7.0.1 and 6.5.4.

Affected products

zammad — zammad

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.