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.

INFO

Published Date :

2026-04-08T18:01:20.870Z

Last Modified :

2026-04-08T19:51:19.873Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34718 vulnerability.

Vendors Products
Zammad
  • Zammad
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34718.

URL Resource
https://github.com/zammad/zammad/security/advisories/GHSA-c2cf-9fc7-jhf3 cve-icon cve-icon
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CVSS Vulnerability Scoring System

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Privileges Required
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SS Integrity
SS Availability