CVE-2026-48015: Shopware: Stored XSS via SVG file upload — no SVG sanitization

June 4, 2026

SVG files are in the allowed_extensions whitelist and can be uploaded by any admin user via the media manager. There is zero SVG content sanitization anywhere in the upload pipeline. A malicious SVG with JavaScript (onload, <script>, <foreignObject>) executes in the context of the Shopware domain when accessed.

References

github.com/advisories/GHSA-xvhc-gm7j-mhmc
github.com/shopware/shopware/releases/tag/v6.6.10.18
github.com/shopware/shopware/releases/tag/v6.7.10.1
github.com/shopware/shopware/security/advisories/GHSA-xvhc-gm7j-mhmc
nvd.nist.gov/vuln/detail/CVE-2026-48015

Code Behaviors & Features

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