CVE-2026-63006 Details
Description
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.
A vulnerability in Zammad, a web-based open-source helpdesk and customer support system, allows attacker-controlled HTML in inbound emails or tickets to bypass the image URL sanitizer. This is achieved through path traversal sequences. When an authenticated agent views the content, the browser resolves the URL to a protected API endpoint, sending the request with the agent's session cookie. This exploitation can lead to forced logout without any user interaction. The vulnerability affects Zammad versions prior to 7.1.2.
Users can upgrade to Zammad version 7.1.2 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 25, 2026CISA-ADP
Assessed Sep 29, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/zammad/zammad/commit/856af85c12413087d6a74ffee25b16048a5ed8c3 | [email protected] | Source CodeVendor |
| https://github.com/zammad/zammad/security/advisories/GHSA-33p2-cm7w-62g3 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Zammad | <= 7.1.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 29, 2026 | CVE Modified | CISA-ADP |
| Sep 25, 2026 | New CVE Received | [email protected] |