CVE-2025-62984 is a stored cross-site scripting (XSS) vulnerability identified in the WPeka WP AdCenter WordPress plugin, affecting versions up to and including 2.6.1. The vulnerability stems from improper neutralization of user-supplied input during web page generation, which allows an attacker with low privileges to inject malicious JavaScript code that is stored persistently within the application. When other users or administrators view the affected pages, the malicious script executes in their browsers, potentially leading to session hijacking, credential theft, or unauthorized actions performed with the victim's privileges. The vulnerability requires low attack complexity and low privileges but does require user interaction, such as viewing a compromised page. The CVSS 3.1 base score of 6.5 reflects a medium severity rating, with impacts on confidentiality, integrity, and availability due to the potential for data theft, manipulation, and disruption. The scope is changed (S:C), indicating that exploitation can affect resources beyond the initially vulnerable component. No known exploits are reported in the wild as of the publication date, but the risk remains significant for websites using this plugin. The vulnerability highlights the importance of secure coding practices, especially input validation and output encoding in web applications that generate dynamic content. Since WP AdCenter is a plugin used for managing advertisements on WordPress sites, compromised sites could be used to deliver malicious ads or redirect users to phishing or malware sites, amplifying the impact.

For European organizations, the impact of CVE-2025-62984 can be substantial, particularly for those relying on WordPress sites with the WP AdCenter plugin for digital marketing and advertising. Exploitation could lead to unauthorized access to user sessions, theft of sensitive data such as credentials or personal information, and manipulation of website content. This could damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR breaches), and cause financial losses due to fraud or remediation costs. Additionally, attackers could leverage compromised sites to distribute malware or conduct phishing campaigns targeting European users, increasing the risk of broader cyber incidents. The medium severity rating suggests a moderate but non-negligible threat, especially for organizations with high web traffic or sensitive user data. The requirement for low privileges and user interaction lowers the barrier for exploitation, making it a relevant concern for many organizations. The potential for scope change means that the vulnerability could affect other components or users beyond the initially targeted plugin, increasing the risk profile.

European organizations should prioritize the following mitigation steps: 1) Monitor WPeka’s official channels for patches addressing CVE-2025-62984 and apply them promptly once available. 2) Until patches are released, implement strict input validation and output encoding on all user-supplied data within the WP AdCenter plugin context to prevent script injection. 3) Limit user privileges in WordPress to the minimum necessary, reducing the risk of low-privilege attackers injecting malicious content. 4) Employ Web Application Firewalls (WAFs) with custom rules to detect and block XSS payloads targeting WP AdCenter endpoints. 5) Conduct regular security audits and code reviews of the plugin and related customizations. 6) Educate administrators and users about the risks of clicking on suspicious links or interacting with untrusted content. 7) Monitor logs and website behavior for signs of compromise or unusual activity. 8) Consider isolating or temporarily disabling the WP AdCenter plugin if immediate patching is not feasible and the risk is deemed high. These measures, combined, reduce the likelihood and impact of exploitation beyond generic advice.