CVE-2026-56731

8.4 highEPSS 0.2%

High (8.4). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.4 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 15% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-09-25
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

References

https://github.com/zammad/zammad/commit/16a4a2e1be6642ec0c3ba3a76e358ad065f48f78
https://github.com/zammad/zammad/security/advisories/GHSA-p9xp-gx8r-4397

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