CVE-2025-49960 identifies a stored Cross-site Scripting (XSS) vulnerability in the LeadBI Plugin for WordPress, specifically in versions up to and including 1.7. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, which allows an attacker to inject malicious scripts that are stored and later executed in the context of other users' browsers. This type of vulnerability can be exploited when an attacker with low privileges submits crafted input that is not properly sanitized or encoded before being rendered on a web page. The CVSS 3.1 base score of 6.5 reflects a medium severity, with an attack vector of network (remote), low attack complexity, requiring low privileges and user interaction, and impacting confidentiality, integrity, and availability partially. The scope is changed, indicating that the vulnerability affects resources beyond the initially vulnerable component. Although no known exploits are currently reported in the wild, the presence of stored XSS in a widely used WordPress plugin poses a significant risk, especially for websites that rely on LeadBI for analytics or user interaction. The vulnerability can be leveraged to steal session cookies, perform actions on behalf of users, or deliver further malware payloads, potentially compromising user data and site integrity.

For European organizations, the impact of this vulnerability can be substantial, particularly for those operating public-facing WordPress sites that utilize the LeadBI plugin for analytics or user engagement. Exploitation could lead to unauthorized access to user sessions, data leakage, defacement, or further malware infections. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR breaches due to data exposure), and disrupt business operations. The partial impact on confidentiality, integrity, and availability means attackers can manipulate site content and user data but may not gain full system control. Organizations in sectors such as e-commerce, media, and government services that rely heavily on WordPress and LeadBI analytics are at higher risk. The requirement for user interaction (e.g., a victim visiting a maliciously crafted page) means social engineering or phishing may be used to facilitate exploitation. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers often develop exploits after public disclosure.

1. Monitor the LeadBI plugin vendor’s announcements and apply security patches immediately once available to remediate the vulnerability. 2. Until patches are released, consider disabling or removing the LeadBI plugin if it is not critical to operations. 3. Implement strict input validation and output encoding on all user-supplied data within the WordPress environment, especially for plugins handling dynamic content. 4. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 5. Use Web Application Firewalls (WAFs) with rules tailored to detect and block XSS attack patterns targeting WordPress plugins. 6. Educate users and administrators about phishing and social engineering tactics that could facilitate exploitation requiring user interaction. 7. Regularly audit and monitor logs for unusual activities or injection attempts related to the LeadBI plugin. 8. Consider isolating or sandboxing analytics plugins to limit the impact of potential compromises. 9. Maintain up-to-date backups to enable rapid recovery in case of successful exploitation.