XSS in Zammad

CVE-2026-34718

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 t…

EPSS: 0.000 (10.9th percentile) — read the EPSS interpretation.

Affected products

  • Zammad — versions < 6.5.4, >= 7.0.0-alpha, < 7.0.1

Weakness classification (CWE)

References