CVE-2022-24749 is a medium-severity vulnerability affecting Sylius, an open-source eCommerce platform widely used for building online stores. The vulnerability arises from improper neutralization of script-related HTML tags (CWE-80) combined with unrestricted upload of files with dangerous types (CWE-434). Specifically, in Sylius versions prior to 1.9.10, 1.10.11, and 1.11.2, an attacker with access to the admin panel can upload an SVG file containing embedded malicious JavaScript code. SVG files are XML-based vector images that can include script elements. When such a file is opened directly in a new browser tab or loaded outside of an IMG tag context, the embedded script executes, resulting in a cross-site scripting (XSS) attack. This vulnerability affects both the admin panel and the public shop pages if the SVG file is accessed improperly. The attack requires the attacker to have privileges to upload files via the admin interface, but no further authentication bypass is needed. The vulnerability is mitigated in the fixed versions 1.9.10, 1.10.11, and 1.11.2. As a workaround, it is recommended to integrate a sanitization library that cleans SVG files upon upload, replacing the default file handling service to prevent malicious script injection before writing files to the filesystem. No known exploits have been reported in the wild, but the vulnerability poses a risk of session hijacking, defacement, or redirection attacks if exploited. The root cause is insufficient sanitization of SVG content and lack of restrictions on file types uploaded through the admin panel.

For European organizations using Sylius for their eCommerce platforms, this vulnerability can lead to significant security risks. An attacker exploiting this flaw could execute arbitrary JavaScript in the context of the admin panel or customer-facing shop pages, potentially stealing session cookies, performing actions on behalf of legitimate users, or redirecting customers to malicious sites. This undermines the confidentiality and integrity of user data and can damage brand reputation. Since the vulnerability requires admin panel access to upload malicious SVG files, the impact is higher if internal user accounts are compromised or if the admin interface is exposed to less secure networks. For organizations handling sensitive customer information or payment data, this XSS vulnerability could facilitate further attacks such as phishing or fraud. Additionally, the ability to execute scripts on shop pages could disrupt availability by injecting malicious content or causing client-side errors. The impact is amplified for larger retailers or those with high traffic volumes, as the potential reach of the attack is broader. Compliance with European data protection regulations (e.g., GDPR) could be jeopardized if customer data is exposed due to exploitation.

1. Upgrade Sylius installations to the patched versions 1.9.10, 1.10.11, or 1.11.2 as soon as possible to fully remediate the vulnerability. 2. If immediate upgrade is not feasible, implement the recommended workaround by integrating a robust SVG sanitization library (such as SVG Sanitizer or similar) that cleans uploaded SVG files to remove any embedded scripts before saving them. Replace the default file upload service with this sanitized process. 3. Restrict admin panel access using strong authentication mechanisms, including multi-factor authentication (MFA), and limit access to trusted IP ranges or VPNs to reduce the risk of unauthorized file uploads. 4. Implement Content Security Policy (CSP) headers on the eCommerce site to restrict the execution of inline scripts and loading of untrusted resources, mitigating the impact of potential XSS payloads. 5. Monitor file uploads and logs for suspicious SVG files or unusual admin activity. 6. Educate administrators about the risks of uploading untrusted SVG files and enforce strict file upload policies. 7. Regularly audit and update third-party libraries and dependencies to ensure no residual vulnerabilities remain. 8. Conduct penetration testing focused on file upload functionalities to verify the effectiveness of mitigations.