CVE-2025-5303 is a high-severity stored Cross-Site Scripting (XSS) vulnerability affecting multiple WordPress plugins developed by enituretechnology, specifically the LTL Freight Quotes – Freightview Edition, Daylight Edition, and Day & Ross Edition. These plugins are widely used for freight quoting functionalities within WordPress environments. The vulnerability arises from improper neutralization of input during web page generation, classified under CWE-79. Specifically, the issue lies in the insufficient sanitization and output escaping of the 'expiry_date' parameter, which allows unauthenticated attackers to inject arbitrary malicious scripts that are stored persistently and executed whenever any user accesses the compromised page. This stored XSS flaw does not require any user interaction or authentication, making it particularly dangerous. The CVSS 3.1 base score of 7.2 reflects a high severity, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The scope is changed (S:C), indicating that the vulnerability can affect resources beyond the vulnerable component, and it impacts confidentiality and integrity with no impact on availability. Although no known exploits are currently reported in the wild, the vulnerability's nature and ease of exploitation make it a significant risk for WordPress sites using these plugins. The lack of available patches at the time of publication further increases exposure. Attackers exploiting this vulnerability could steal sensitive user data, hijack user sessions, perform actions on behalf of users, or deliver further malware payloads, severely compromising the affected websites and their users.

For European organizations, this vulnerability poses a substantial risk, especially for those in logistics, freight, and supply chain sectors that rely on WordPress sites with these specific plugins for quoting and freight management. Successful exploitation could lead to unauthorized access to user credentials, session hijacking, and data leakage, undermining confidentiality and trust. Given the plugins' role in freight quoting, attackers might manipulate displayed information, potentially causing financial discrepancies or operational disruptions. Additionally, compromised websites could be used as vectors for broader attacks, including phishing campaigns targeting European customers or partners. The impact extends to regulatory compliance, as data breaches involving personal or business data could trigger GDPR violations, resulting in legal penalties and reputational damage. The vulnerability's ability to affect unauthenticated users increases the attack surface, making it easier for threat actors to exploit without needing insider access or user interaction. This elevates the risk for European enterprises that maintain public-facing WordPress sites with these plugins, especially SMEs that may lack robust security monitoring.

European organizations should immediately audit their WordPress installations to identify the presence of the affected enituretechnology LTL Freight Quotes plugins. Since no official patches are available yet, temporary mitigations include disabling or uninstalling the vulnerable plugins until updates are released. Implementing Web Application Firewalls (WAFs) with custom rules to detect and block malicious payloads targeting the 'expiry_date' parameter can reduce exploitation risk. Organizations should enforce strict Content Security Policies (CSP) to limit the execution of unauthorized scripts. Regularly scanning websites with specialized tools for XSS vulnerabilities and monitoring logs for suspicious activities related to the affected parameters is critical. Additionally, educating site administrators on secure plugin management and timely updates will help prevent exploitation. Once patches become available, prompt application is essential. For long-term resilience, consider isolating critical web applications and employing multi-factor authentication to reduce the impact of potential session hijacking. Finally, organizations should prepare incident response plans specific to web application compromises involving XSS attacks.