CVE-2024-56173 is a stored cross-site scripting (XSS) vulnerability identified in Optimizely Configured Commerce prior to version 5.2.2408. This vulnerability arises from improper sanitization of JavaScript embedded within SVG documents, allowing attackers to inject malicious scripts that are stored on the server and later executed in the browsers of users who access the affected content. The attack vector is network-based with no privileges required, but user interaction is necessary to trigger the malicious payload. The vulnerability is classified under CWE-79, indicating it is a classic XSS flaw. The scope is 'changed,' meaning the vulnerability affects resources beyond the initially vulnerable component, potentially impacting user confidentiality. The CVSS v3.1 base score is 4.7, indicating medium severity, with the vector string AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N. This means the attack can be launched remotely over the network with low attack complexity, does not require privileges, but does require user interaction. The impact is limited to partial confidentiality loss, with no integrity or availability impact. No known exploits have been reported in the wild, and no official patches have been linked yet. The vulnerability is significant because SVG files are commonly used for scalable graphics in web applications, and improper handling of embedded JavaScript can lead to persistent XSS attacks that compromise user sessions or data confidentiality. Organizations using vulnerable Optimizely Configured Commerce versions should be aware of this risk and implement mitigations promptly.

The primary impact of CVE-2024-56173 is the potential for attackers to execute malicious JavaScript in the browsers of users interacting with vulnerable Optimizely Configured Commerce platforms. This can lead to partial confidentiality breaches, such as theft of session tokens, user data exposure, or unauthorized actions performed in the context of the victim's session. Although the vulnerability does not directly affect data integrity or system availability, the confidentiality compromise can facilitate further attacks like session hijacking or phishing. The requirement for user interaction limits the attack's reach but does not eliminate risk, especially in e-commerce environments where users frequently interact with dynamic content. Organizations relying on Optimizely Configured Commerce for online storefronts or customer engagement may face reputational damage, loss of customer trust, and potential regulatory consequences if user data is compromised. The absence of known exploits in the wild provides a window for proactive mitigation, but the vulnerability's presence in widely used e-commerce software means the attack surface is significant. The scope change indicates that the vulnerability could affect multiple components or users beyond the initially targeted resource, increasing potential impact.

To mitigate CVE-2024-56173, organizations should prioritize upgrading Optimizely Configured Commerce to version 5.2.2408 or later once an official patch is released. In the interim, implement strict input validation and sanitization on all SVG content uploaded or rendered by the platform, specifically filtering out or encoding JavaScript within SVG files. Employ Content Security Policy (CSP) headers to restrict the execution of inline scripts and limit the sources from which scripts can be loaded, reducing the risk of XSS exploitation. Regularly audit and monitor web application logs for unusual activity or injection attempts involving SVG files. Educate developers and administrators on secure handling of SVG and other vector graphics formats, emphasizing the risks of embedded scripts. Consider disabling or restricting SVG uploads if feasible until a patch is applied. Additionally, implement multi-factor authentication and session management best practices to reduce the impact of potential session hijacking. Conduct penetration testing focused on XSS vectors involving SVG content to identify residual risks. Finally, maintain up-to-date threat intelligence feeds to detect emerging exploits targeting this vulnerability.