CVE-2024-57277 identifies a Cross Site Scripting (XSS) vulnerability in InnoShop version 0.3.8 and earlier. The issue stems from the application's handling of SVG file uploads, where malicious scripts embedded within SVG files are not properly sanitized or validated before being rendered in the browser. SVG files can contain JavaScript, and if an attacker uploads a crafted SVG, they can execute arbitrary scripts in the context of the victim's browser session. The vulnerability is classified under CWE-79, indicating improper neutralization of input leading to script injection. The CVSS 3.1 base score is 5.7 (medium severity), with an attack vector of network (remote exploitation), low attack complexity, requiring privileges and user interaction. The impact is primarily on confidentiality, as attackers could steal session tokens or sensitive information accessible via the browser. Integrity and availability are not affected. No patches or fixes are currently linked, and no known exploits have been reported in the wild. The vulnerability requires that a user interacts with the malicious SVG content, typically by viewing or opening it within the application interface. This vulnerability highlights the risks associated with accepting and rendering user-uploaded SVG files without adequate sanitization or content security policies.

For European organizations, especially those operating e-commerce platforms or using InnoShop or similar CMS/e-commerce solutions, this vulnerability poses a risk of session hijacking, data theft, and unauthorized access to sensitive user information. The confidentiality breach could lead to exposure of customer data, impacting privacy compliance under GDPR. Although the vulnerability does not affect system integrity or availability, the loss of confidentiality can damage brand reputation and customer trust. Attackers could leverage this vulnerability to perform targeted phishing or social engineering attacks by injecting malicious scripts that manipulate user sessions. The requirement for user interaction limits mass exploitation but does not eliminate risk, particularly in environments with high user engagement. Organizations in sectors with high online transaction volumes or sensitive data handling are at greater risk. The absence of known exploits currently provides a window for proactive mitigation before active exploitation occurs.

1. Immediately restrict or disable SVG file uploads until a secure patch is available. 2. Implement robust server-side sanitization of SVG files using libraries designed to remove scripts and potentially dangerous elements. 3. Enforce strict Content Security Policies (CSP) to limit script execution from uploaded content. 4. Conduct thorough input validation and output encoding on all user-uploaded content. 5. Monitor application logs for unusual upload patterns or access to SVG files. 6. Educate users about the risks of interacting with untrusted content and encourage cautious behavior. 7. If possible, convert SVG files to safer formats (e.g., PNG) before rendering. 8. Stay updated with vendor advisories and apply patches promptly once available. 9. Perform regular security assessments focusing on file upload functionalities. 10. Consider implementing multi-factor authentication to reduce the impact of session hijacking.