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Medium severity6.1NVD Advisory· Published Apr 8, 2026· Updated Apr 17, 2026

CVE-2026-34718

CVE-2026-34718

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Zammad/Zammad3 versions
    cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*range: <6.5.4
    • cpe:2.3:a:zammad:zammad:7.0.0:*:*:*:*:*:*:*
    • (no CPE)range: <7.0.1, <6.5.4

Patches

Vulnerability mechanics

References

1

News mentions

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