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CVE-2026-34718
Published: Apr 8, 2026
Modified: Apr 8, 2026
PUBLISHED
Description
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.
| Vendor | Product | Versions |
|---|---|---|
zammad | zammad | affected < 6.5.4affected >= 7.0.0-alpha, < 7.0.1 |
Weaknesses (CWE)
References
https://github.com/zammad/zammad/security/advisories/GHSA-c2cf-9fc7-jhf3
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