CVE-2025-5339 is a high-severity SQL Injection vulnerability affecting the Ads Pro Plugin - Multi-Purpose WordPress Advertising Manager developed by scripteo. This plugin is widely used to manage advertising on WordPress websites. The vulnerability arises from improper neutralization of special elements in the 'bsa_pro_id' parameter, which is insufficiently escaped and not properly prepared in SQL queries. This flaw allows unauthenticated attackers to perform time-based SQL Injection attacks by appending malicious SQL code to existing queries. Exploitation can lead to unauthorized extraction of sensitive data from the backend database without requiring any authentication or user interaction. The vulnerability affects all versions up to and including 4.89 of the plugin. The CVSS 3.1 base score is 7.5, reflecting a high severity due to network attack vector, low attack complexity, no privileges required, no user interaction, and high confidentiality impact. Although no known exploits are currently reported in the wild, the vulnerability presents a significant risk given the popularity of WordPress and the plugin's role in managing advertising content, which often involves sensitive business and user data. The lack of available patches at the time of disclosure increases the urgency for mitigation.

For European organizations, this vulnerability poses a substantial risk to the confidentiality of data hosted on WordPress sites using the Ads Pro Plugin. Attackers exploiting this flaw can extract sensitive information such as user data, advertising metrics, and potentially payment or business intelligence data stored in the database. This could lead to data breaches violating GDPR requirements, resulting in legal penalties and reputational damage. Additionally, compromised advertising platforms could be manipulated to display unauthorized or malicious content, undermining trust and potentially causing financial losses. Given the widespread use of WordPress in Europe across various sectors including e-commerce, media, and SMEs, the impact could be broad. Organizations relying on this plugin for ad management should consider the risk of targeted attacks aiming to exploit this vulnerability to gain footholds or exfiltrate data.

Immediate mitigation steps include disabling or removing the vulnerable Ads Pro Plugin until a secure patch is released. Organizations should monitor official vendor channels for updates and apply patches promptly once available. In the interim, implementing Web Application Firewall (WAF) rules to detect and block suspicious SQL injection payloads targeting the 'bsa_pro_id' parameter can reduce exposure. Conducting thorough audits of WordPress plugins to identify and remove unused or outdated components is recommended. Additionally, restricting database user permissions to the minimum necessary can limit the impact of successful injection attempts. Logging and monitoring database query anomalies and web server logs for unusual patterns related to this parameter can aid in early detection of exploitation attempts. Finally, organizations should ensure regular backups and have incident response plans ready to address potential breaches stemming from this vulnerability.