CVE-2025-49410 is a Stored Cross-site Scripting (XSS) vulnerability classified under CWE-79, affecting the Imran Emu TC Testimonials plugin up to version 1.1.1. This vulnerability arises from improper neutralization of user-supplied input during web page generation, allowing malicious scripts to be stored and subsequently executed in the context of users viewing the affected pages. The vulnerability requires low attack complexity and low privileges (PR:L), but user interaction is necessary (UI:R) for exploitation, such as a victim visiting a crafted page. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vulnerability impacts confidentiality, integrity, and availability to a limited extent (C:L/I:L/A:L) and has a scope change (S:C), meaning the vulnerability affects components beyond the initially vulnerable component. No known exploits are currently reported in the wild, and no patches have been linked or published yet. Stored XSS vulnerabilities can lead to session hijacking, defacement, phishing, or malware distribution by injecting malicious JavaScript that executes in the victim's browser, potentially compromising user accounts or sensitive data. The plugin TC Testimonials is typically used to display user testimonials on websites, often integrated into content management systems, which may expose a broad range of websites to this vulnerability if they have not sanitized input properly.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on the TC Testimonials plugin to display user-generated content on their websites. Exploitation could lead to unauthorized access to user sessions, theft of sensitive information, or manipulation of website content, undermining user trust and potentially violating data protection regulations such as GDPR. Organizations in sectors like e-commerce, finance, healthcare, and public services, which often collect and display user feedback, could face reputational damage and legal consequences if customer data is compromised. Additionally, the scope change indicates that the vulnerability could affect other components or systems linked to the plugin, increasing the risk of broader compromise. Although no active exploits are reported, the medium severity and ease of exploitation with low privileges mean attackers could develop exploits rapidly once details become widely known, increasing the urgency for mitigation.

European organizations should immediately audit their websites for the use of the Imran Emu TC Testimonials plugin and identify affected versions. Until an official patch is released, organizations should implement strict input validation and output encoding on all user-supplied data related to testimonials to prevent script injection. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS attacks. Regularly monitor web application logs for suspicious activities indicative of XSS exploitation attempts. Consider temporarily disabling or removing the plugin if it is not critical to operations or if mitigation controls cannot be effectively applied. Additionally, educate web developers and administrators about secure coding practices to prevent similar vulnerabilities in custom or third-party components. Once a patch is available, prioritize its deployment and verify the fix through security testing.