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Vulnerabilities

CVE-2026-34718 | BDVDB-2026-325689 Detail

zammadzammad

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.

Impact#

Per CVSS v4.0: confidentiality impact none, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

  • CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.