CVE-2026-25472 is a stored cross-site scripting (XSS) vulnerability identified in ThemeFusion's Fusion Builder plugin, a popular WordPress page builder tool. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be stored persistently within the website's content. When a victim visits a compromised page, the malicious script executes in their browser context, potentially enabling attackers to steal cookies, session tokens, or other sensitive information, perform actions on behalf of the user, or redirect users to malicious sites. The affected versions include all releases up to and including 3.14.3, with no minimum version specified. Exploitation does not require authentication or user interaction beyond visiting the infected page, increasing the attack surface. Although no public exploits have been reported yet, the vulnerability is publicly disclosed and thus may attract attackers. The plugin's widespread use in WordPress sites globally, including Europe, amplifies the risk. The absence of a CVSS score necessitates an independent severity assessment based on the vulnerability's characteristics. Stored XSS vulnerabilities are particularly dangerous due to their persistence and potential for widespread impact. The vulnerability's technical details indicate that input sanitization and output encoding mechanisms are insufficient or missing in Fusion Builder's codebase. This flaw can be exploited by attackers submitting crafted content through the plugin's interface or other input vectors that are then rendered without proper escaping. The vulnerability's disclosure date is February 19, 2026, with no patches currently linked, emphasizing the urgency for users to monitor vendor updates. Organizations using Fusion Builder should audit their sites for suspicious content and consider temporary mitigations such as disabling vulnerable features or restricting user input until patches are available.

For European organizations, this vulnerability poses a significant risk to websites built with WordPress using the Fusion Builder plugin. Exploitation can lead to unauthorized access to user sessions, theft of sensitive data such as login credentials, and potential defacement or malware distribution through compromised sites. This can damage organizational reputation, lead to regulatory non-compliance under GDPR due to data breaches, and cause operational disruptions. E-commerce platforms, government portals, and corporate websites are particularly at risk, as attackers may leverage XSS to escalate attacks or conduct phishing campaigns targeting European users. The persistence of stored XSS increases the likelihood of widespread impact across site visitors. Additionally, the ease of exploitation without authentication broadens the threat landscape, making automated attacks feasible. The lack of immediate patches may prolong exposure, increasing the window of opportunity for attackers. Organizations relying on Fusion Builder should consider the vulnerability a high priority due to its potential to compromise confidentiality and integrity of data and user trust.

1. Monitor ThemeFusion's official channels for security patches addressing CVE-2026-25472 and apply updates promptly once available. 2. In the interim, restrict or disable user input fields or features within Fusion Builder that allow content submission until patched. 3. Implement strict input validation and output encoding on all user-supplied data rendered by the plugin to prevent script injection. 4. Deploy a Web Application Firewall (WAF) with rules designed to detect and block common XSS payloads targeting Fusion Builder. 5. Conduct regular security audits and scanning of websites using Fusion Builder to identify and remove malicious scripts or injected content. 6. Educate site administrators and developers on secure coding practices and the risks of XSS vulnerabilities. 7. Limit administrative access to trusted users and enforce strong authentication mechanisms to reduce the risk of malicious content insertion. 8. Consider using Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts on affected sites. 9. Backup website data regularly to enable quick restoration in case of compromise. 10. Monitor logs and user activity for signs of exploitation attempts or unusual behavior related to the plugin.