CVE-2025-1505 identifies a reflected cross-site scripting (XSS) vulnerability in the berocket Advanced AJAX Product Filters plugin for WordPress, present in all versions up to and including 1.6.8.1. The vulnerability stems from improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of the 'nonce' parameter. This allows an unauthenticated attacker to craft malicious URLs containing executable JavaScript code. When a victim clicks such a link, 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 is classified under CWE-79, reflecting the improper input validation and output encoding. The CVSS 3.1 base score is 6.1, indicating a medium severity with attack vector network, low attack complexity, no privileges required, user interaction required, and scope changed. The vulnerability affects confidentiality and integrity but not availability. No patches or official fixes are currently linked, and no exploits have been reported in the wild as of the publication date. The plugin is widely used in WordPress e-commerce sites to filter products dynamically, making the attack surface significant in online retail environments.

The primary impact of this vulnerability is on the confidentiality and integrity of user data and sessions. Successful exploitation can lead to theft of authentication cookies, enabling attackers to impersonate legitimate users or administrators. This can result in unauthorized access to sensitive information, manipulation of user accounts, or fraudulent transactions on e-commerce platforms. While availability is not directly affected, the reputational damage and potential regulatory consequences from data breaches can be severe. The vulnerability's requirement for user interaction (clicking a malicious link) means social engineering is a key component of exploitation. Given the widespread use of WordPress and the popularity of the Advanced AJAX Product Filters plugin in online stores, many organizations worldwide could be targeted, especially those relying on this plugin for product filtering functionality. Attackers could leverage this vulnerability to conduct targeted phishing campaigns or mass exploitation attempts against customers and site administrators.

Organizations should immediately verify if they are using the berocket Advanced AJAX Product Filters plugin version 1.6.8.1 or earlier. If so, they should monitor the vendor's channels for official patches or updates addressing this vulnerability and apply them promptly once available. In the interim, administrators can implement Web Application Firewall (WAF) rules to detect and block suspicious requests containing malicious payloads in the 'nonce' parameter. Additionally, employing Content Security Policy (CSP) headers can help mitigate the impact of XSS by restricting script execution sources. Site owners should educate users about phishing risks and encourage cautious behavior regarding clicking unknown links. Reviewing and hardening input validation and output encoding practices in custom code and plugins can reduce similar risks. Regular security audits and vulnerability scanning focused on WordPress plugins are recommended to detect and remediate such issues proactively.