Security Advisory

CVE-2026-34718

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-08 18:01:20

Last updated 2026-04-08 19:51:19

Assigner GitHub_M

State 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.

← Browse all CVEs View on cve.org ↗