CVE-2025-9442 is a stored Cross-Site Scripting (XSS) vulnerability affecting the StreamWeasels Kick Integration plugin for WordPress, specifically in versions up to and including 1.1.5. The vulnerability arises due to improper neutralization of input during web page generation, classified under CWE-79. The issue is located in the 'vodsChannel' parameter, which lacks sufficient input sanitization and output escaping. This flaw allows authenticated attackers with Contributor-level access or higher to inject arbitrary malicious scripts into pages generated by the plugin. These scripts execute in the context of any user who views the compromised page, potentially leading to session hijacking, privilege escalation, or other malicious activities. The vulnerability has a CVSS v3.1 base score of 6.4, indicating a medium severity level. The vector details (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N) show that the attack can be performed remotely over the network with low attack complexity, requires privileges equivalent to a Contributor role, does not require user interaction, and impacts confidentiality and integrity with a scope change. No known exploits are currently reported in the wild, and no patches have been officially released yet. The vulnerability is significant because WordPress is widely used, and plugins like StreamWeasels Kick Integration are often deployed to enhance streaming functionalities, making affected sites attractive targets for attackers seeking to leverage XSS for broader attacks such as phishing or malware distribution.

For European organizations, the impact of this vulnerability can be substantial, especially for those relying on WordPress sites with the StreamWeasels Kick Integration plugin installed. Successful exploitation could lead to unauthorized script execution, enabling attackers to steal user credentials, hijack sessions, or manipulate site content. This can damage organizational reputation, lead to data breaches involving personal data protected under GDPR, and cause operational disruptions. Since the attack requires Contributor-level access, insider threats or compromised accounts pose a significant risk. Additionally, the scope change in the CVSS vector indicates that the vulnerability can affect resources beyond the initially compromised component, potentially impacting other parts of the website or connected systems. European organizations in sectors such as media, entertainment, education, and e-commerce, which frequently use streaming plugins, may face increased risk. The lack of a patch means organizations must rely on interim mitigations, increasing exposure duration. Furthermore, regulatory implications under GDPR for data breaches caused by such vulnerabilities could result in financial penalties and mandatory disclosure requirements.

To mitigate this vulnerability effectively, European organizations should first identify all WordPress instances using the StreamWeasels Kick Integration plugin and verify the installed version. Until an official patch is released, organizations should restrict Contributor-level access strictly to trusted users and audit existing user permissions to minimize the risk of malicious input. Implementing Web Application Firewall (WAF) rules that detect and block suspicious payloads targeting the 'vodsChannel' parameter can provide a protective layer. Additionally, organizations can apply manual input validation and output encoding at the application level if customization is feasible. Monitoring web server logs for unusual activity related to plugin parameters and conducting regular security assessments can help detect exploitation attempts early. Organizations should also prepare to update the plugin promptly once a patch becomes available. Educating content contributors about security best practices and the risks of injecting untrusted content can reduce inadvertent exploitation. Finally, isolating WordPress environments and employing Content Security Policy (CSP) headers can limit the impact of any successful XSS attacks by restricting script execution contexts.