---
id: CVE-2026-63006
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
  7.1.2, attacker-controlled HTML in inbound emails or tickets could bypass the
  image URL sanitizer using path traversal sequences. When an authenticated
  agent vi…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'
cwe:
  - CWE-22
vendor: zammad
product: zammad
affected:
  - zammad < 7.1.2
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T19:17:54.500'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63006'
references:
  - url: >-
      https://github.com/zammad/zammad/commit/856af85c12413087d6a74ffee25b16048a5ed8c3
    label: security-advisories@github.com
  - url: 'https://github.com/zammad/zammad/security/advisories/GHSA-33p2-cm7w-62g3'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-25T19:15:38.999Z'
---

## Overview

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, attacker-controlled HTML in inbound emails or tickets could bypass the image URL sanitizer using path traversal sequences. When an authenticated agent views the content, the browser resolves the URL to a protected API endpoint and sends the request with the agent's session cookie, enabling side effects such as forced logout without any user interaction. This issue is fixed in version 7.1.2.

## Remediation

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