CVE-2025-48347 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the bxSlider integration plugin for WordPress developed by Vincent Mimoun-Prat. The vulnerability arises from improper neutralization of input during web page generation, allowing malicious actors to inject and store arbitrary JavaScript code within the affected WordPress sites using bxSlider integration versions up to 1.7.2. When a victim visits a compromised page, the injected script executes in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability requires low attack complexity (AC:L) but does require privileges (PR:L) and user interaction (UI:R), indicating that an attacker must have some level of authenticated access to inject the payload and that the victim must interact with the malicious content for exploitation. The CVSS v3.1 base score is 6.5, reflecting a medium severity with partial impacts on confidentiality, integrity, and availability, and a scope change (S:C) indicating that the vulnerability affects components beyond the initially vulnerable module. No known exploits are currently reported in the wild, and no patches have been linked yet, suggesting that mitigation may rely on configuration changes or waiting for an official update. The vulnerability is significant because WordPress is a widely used CMS in Europe, and bxSlider is a popular plugin for creating responsive sliders, meaning many websites could be exposed if they use this integration without proper sanitization or updates.

For European organizations, this vulnerability poses a moderate risk, especially for those relying on WordPress sites with bxSlider integration for marketing, e-commerce, or customer engagement. Exploitation could lead to theft of user credentials, session tokens, or sensitive data, undermining user trust and potentially violating GDPR requirements for data protection. The stored XSS nature means that malicious scripts persist on the server, affecting all visitors to the compromised pages, which can amplify the damage. This could result in reputational damage, regulatory fines, and operational disruptions. Organizations in sectors such as finance, healthcare, and government, which often use WordPress for public-facing sites, may face increased risk due to the sensitivity of their user data and the criticality of their online services.

Organizations should immediately audit their WordPress installations to identify the presence of the bxSlider integration plugin and determine the version in use. Until an official patch is released, administrators should restrict plugin usage to trusted users with minimal privileges to reduce the risk of malicious input injection. Implementing Web Application Firewalls (WAFs) with rules to detect and block common XSS payloads can provide a temporary defense. Additionally, applying Content Security Policy (CSP) headers can limit the execution of unauthorized scripts. Regularly updating WordPress core and plugins, monitoring logs for suspicious activity, and educating users about phishing and social engineering risks are critical. Once a patch becomes available, prompt application is essential. For sites where immediate patching is not feasible, consider disabling or replacing the vulnerable plugin with a secure alternative.