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.
In src/Core/Framework/Resources/config/packages/shopware.yaml, line 194:
allowed_extensions: ["jpg", "jpeg", "png", "webp", "avif", "gif", "svg", ...]
SVG is whitelisted. The upload path (MediaUploadController → FileSaver → TypeDetector) recognizes SVG as ImageType with VECTOR_GRAPHIC flag, but no code strips JavaScript, event handlers, or external entity references from the SVG XML.
A search of the entire codebase for SVG sanitization returns — no DOMPurify, no svg-sanitize, no strip_tags on SVG content, nothing.
Stored XSS affecting all users who view the uploaded SVG. In an e-commerce context, this can lead to admin account takeover, customer data theft, or malicious plugin installation.
Either:
allowed_extensions if SVG upload is not a core requirementenshrined/svg-sanitize (strips scripts, event handlers, external references)Content-Disposition: attachment to prevent inline renderingusercontent.apps.nextcloud.com)Option 2 is the most practical — enshrined/svg-sanitize is already used by WordPress and other PHP projects.
Regards & BG, Keyvan Hardani
| Software | From | Fixed in |
|---|---|---|
shopware / core
|
6.7.0.0 | 6.7.10.1 |
shopware / core
|
- | 6.6.10.18 |
shopware / platform
|
6.7.0.0 | 6.7.10.1 |
shopware / platform
|
- | 6.6.10.18 |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
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