---
id: CVE-2026-56731
title: Zammad is a web based open source helpdesk/customer support system
summary: >-
  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 cre…
severity: high
cvss: 8.4
cvssVector: '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'
cwe:
  - CWE-79
vendor: zammad
product: zammad
affected:
  - zammad < 7.0.1
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T20:17:08.897'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56731'
references:
  - url: >-
      https://github.com/zammad/zammad/commit/16a4a2e1be6642ec0c3ba3a76e358ad065f48f78
    label: security-advisories@github.com
  - url: 'https://github.com/zammad/zammad/security/advisories/GHSA-p9xp-gx8r-4397'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-25T19:42:46.394827Z'
cvssSource: cna
ingestedAt: '2026-09-25T18:14:20.465Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.