CVE-2026-48015 in Shopware
Summary
by MITRE • 07/17/2026
Shopware is an open commerce platform. Prior to 6.6.10.18 and 6.7.10.1, SVG files are in the allowed_extensions whitelist in src/Core/Framework/Resources/config/packages/shopware.yaml and can be uploaded via the media manager without SVG content sanitization in the upload pipeline from MediaUploadController to FileSaver to TypeDetector, allowing malicious SVG JavaScript such as onload, <script>, and <foreignObject> to execute in the Shopware domain when the uploaded SVG is viewed. This issue is fixed in versions 6.6.10.18 and 6.7.10.1.
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Analysis
by VulDB Data Team • 07/17/2026
This vulnerability affects Shopware commerce platforms prior to versions 6.6.10.18 and 6.7.10.1, representing a critical server-side request forgery and cross-site scripting risk. The flaw stems from improper file validation and sanitization processes within the media upload pipeline, specifically targeting SVG file handling where malicious code execution becomes possible through the lack of content sanitization. The vulnerability manifests when SVG files are uploaded via the media manager interface, bypassing security controls that should normally prevent dangerous JavaScript execution within the platform's domain context.
The technical implementation of this vulnerability occurs through a chain of processing steps beginning with MediaUploadController accepting file uploads without proper validation, continuing through FileSaver which stores files without sanitizing their content, and concluding with TypeDetector which identifies uploaded files as valid SVGs. The root cause lies in the configuration file src/Core/Framework/Resources/config/packages/shopware.yaml where SVG extensions are whitelisted without corresponding security measures. This creates an attack surface where malicious actors can embed JavaScript payloads using common vector elements such as onload attributes, script tags, and foreignObject elements that execute within the browser context of users viewing the uploaded files.
The operational impact of this vulnerability is severe as it enables persistent cross-site scripting attacks against authenticated users who view affected SVG content. Attackers can execute arbitrary JavaScript code in the context of the Shopware domain, potentially leading to session hijacking, data exfiltration, and privilege escalation. The vulnerability affects all users with access to the media manager functionality, making it particularly dangerous in multi-user environments where administrators may unknowingly upload malicious files. This risk is exacerbated by the fact that SVG files are commonly used for logos, icons, and graphics, making them a natural part of any e-commerce platform's media library.
Security implications extend beyond simple XSS execution to include potential privilege escalation and data breach capabilities within the Shopware environment. The vulnerability aligns with CWE-79 (Cross-site Scripting) and CWE-20 (Improper Input Validation) categories, while also mapping to ATT&CK techniques including T1566 (Phishing with Spoofed Credentials) and T1203 (Exploitation for Client Execution). Organizations should immediately implement the patch versions 6.6.10.18 and 6.7.10.1 that address this issue through proper SVG sanitization, enhanced file validation, and removal of unsafe content from the upload pipeline. Additional mitigations include implementing Content Security Policy headers, restricting media manager access to trusted administrators only, and conducting regular security audits of uploaded content to prevent exploitation attempts.
The vulnerability demonstrates a critical flaw in web application security where configuration-based trust assumptions lead to dangerous execution paths. The absence of proper input sanitization and validation at multiple points in the file processing pipeline creates an exploitable condition that allows arbitrary code execution within the application's security context. Organizations should also consider implementing automated scanning tools to detect potentially malicious SVG files and establish secure coding practices that prevent similar issues in future development cycles, particularly focusing on proper content validation and sanitization for all file types processed through web applications.