CVE-2025-66092 identifies a stored cross-site scripting (XSS) vulnerability in the bqworks Accordion Slider plugin, a tool commonly used to create interactive accordion-style sliders on websites. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing attackers to inject malicious JavaScript code that is stored persistently within the application. When other users or administrators visit the affected pages, the malicious scripts execute in their browsers, potentially leading to session hijacking, credential theft, defacement, or the spread of malware. The affected versions include all releases up to and including version 1.9.13. No CVSS score has been assigned yet, and no public exploits have been reported. The vulnerability does not require authentication to exploit, increasing its risk profile. The attack vector typically involves an attacker submitting crafted input through vulnerable fields or parameters that the plugin fails to sanitize properly. This input is then rendered unsafely in the HTML output, enabling script execution. Stored XSS is particularly dangerous because the malicious payload is persistent, affecting all users who access the compromised content. The vulnerability affects websites using the Accordion Slider plugin, which is often integrated into WordPress sites or other CMS platforms. As such, the scope includes any web-facing application employing this plugin for content display. The lack of a patch link suggests that a fix may not yet be publicly available, emphasizing the need for interim protective measures.

For European organizations, this vulnerability presents significant risks including unauthorized access to user sessions, theft of sensitive information, and potential website defacement. Attackers exploiting the stored XSS could impersonate legitimate users or administrators, leading to further compromise of internal systems or data leakage. The persistent nature of the vulnerability means that once exploited, all visitors to the affected pages are at risk, amplifying the potential damage. Organizations in sectors such as e-commerce, finance, healthcare, and government, which often rely on web applications for customer interaction, are particularly vulnerable to reputational damage and regulatory penalties under GDPR if personal data is compromised. Additionally, the exploitation could be leveraged to distribute malware or conduct phishing attacks targeting European users. The absence of a patch increases the window of exposure, necessitating immediate mitigation efforts. Given the widespread use of WordPress and associated plugins in Europe, the potential attack surface is considerable, especially for small and medium enterprises that may lack robust security controls.

1. Monitor official bqworks channels and security advisories for the release of a patch addressing CVE-2025-66092 and apply updates immediately upon availability. 2. Implement strict input validation and output encoding on all user-supplied data related to the Accordion Slider plugin to prevent injection of malicious scripts. 3. Deploy a Web Application Firewall (WAF) configured to detect and block common XSS payloads targeting the plugin's parameters. 4. Conduct regular security audits and code reviews of custom integrations involving the Accordion Slider to identify and remediate unsafe coding practices. 5. Educate web administrators and developers on secure coding standards and the risks of stored XSS vulnerabilities. 6. Limit user privileges on content management systems to reduce the risk of unauthorized input submission. 7. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 8. Monitor web server and application logs for unusual input patterns or error messages indicative of exploitation attempts. 9. Consider temporarily disabling or replacing the Accordion Slider plugin with a secure alternative until a patch is available. 10. Backup affected websites regularly to enable quick restoration in case of compromise.