High severity · published Sep 25, 2026
CVE-2026-56731
Zammad: Cross-Site Scripting in Ticket Notifications
8.4
CVSS
0.2%
EPSS
No
On KEV
Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1, a low-privilege authenticated user may inject arbitrary HTML markup, including JavaScript event handlers, into a ticket title via the standard ticket creation workflow. The title is persisted without sanitization. This issue is fixed in version 7.0.1.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZA
zammad · zammad
< 7.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56731
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56731
github.com
https://github.com/zammad/zammad/commit/16a4a2e1be6642ec0c3ba3a76e358ad065f48f78
github.com
https://github.com/zammad/zammad/security/advisories/GHSA-p9xp-gx8r-4397
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