Shopware version 6.7 allows the upload of attacker‑controlled HTML files and serves them as text/html without effective security headers, enabling stored cross-site scripting (XSS). When a malicious uploaded file containing an embedded JavaScript payload is viewed by an administrator, the attacker can access and exfiltrate the administrator's authentication token.

The compromised token enables unauthorized access to the Shopware Administration API. If the affected administrator account possesses extension‑management privileges, an attacker can upload, install, and activate malicious plugins to achieve arbitrary PHP code execution on the underlying OS with the privileges of the Shopware process.

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Fixes

Solution

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Workaround

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References
History

Tue, 13 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Shopware
Shopware shopware
Vendors & Products Shopware
Shopware shopware

Tue, 13 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Shopware version 6.7 allows the upload of attacker‑controlled HTML files and serves them as text/html without effective security headers, enabling stored cross-site scripting (XSS). When a malicious uploaded file containing an embedded JavaScript payload is viewed by an administrator, the attacker can access and exfiltrate the administrator's authentication token. The compromised token enables unauthorized access to the Shopware Administration API. If the affected administrator account possesses extension‑management privileges, an attacker can upload, install, and activate malicious plugins to achieve arbitrary PHP code execution on the underlying OS with the privileges of the Shopware process.
Title CVE-2026-104937
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cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published:

Updated: 2026-10-13T20:08:23.554Z

Reserved: 2026-10-02T17:10:28.555Z

Link: CVE-2026-104937

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-13T19:17:56.030

Modified: 2026-10-13T19:17:56.117

Link: CVE-2026-104937

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T19:45:18Z

Weaknesses

No weakness.