CVE-2025-47509 is a stored Cross-site Scripting (XSS) vulnerability classified under CWE-79, affecting the Ajay Top 10 product up to version 4.1.0. Stored XSS occurs when malicious input is improperly sanitized or neutralized before being stored and subsequently rendered in a web page, allowing attackers to inject and execute arbitrary scripts in the context of other users' browsers. This vulnerability arises from improper input validation during web page generation, enabling an attacker with limited privileges (requires authentication) to inject malicious scripts that are then stored persistently and executed when other users view the affected content. The CVSS v3.1 base score is 6.5 (medium severity), with an attack vector of network (remote exploitation), low attack complexity, requiring privileges (PR:L), and user interaction (UI:R). The scope is changed (S:C), indicating that exploitation can affect resources beyond the vulnerable component. The impact affects confidentiality, integrity, and availability to a limited extent (C:L, I:L, A:L). No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is publicly disclosed as of May 7, 2025, and enriched by CISA, indicating recognition by US cybersecurity authorities. Stored XSS can be leveraged for session hijacking, privilege escalation, phishing, or delivering further payloads, posing a significant risk especially in multi-user environments where sensitive data or administrative functions are accessible.

For European organizations, this vulnerability presents a moderate risk primarily in web applications utilizing the Ajay Top 10 product, especially those with multi-user access or administrative interfaces. Exploitation could lead to unauthorized disclosure of user credentials, session tokens, or sensitive information, potentially violating GDPR requirements for data protection and privacy. The integrity of web content and user interactions can be compromised, leading to reputational damage and loss of user trust. Availability impact is limited but could manifest through script-based denial-of-service or disruption of user workflows. Organizations in sectors such as finance, healthcare, government, and critical infrastructure that rely on Ajay Top 10 for web content management or dashboards may face increased risk. The requirement for authentication and user interaction somewhat limits the attack surface but does not eliminate risk, especially if social engineering or insider threats are considered. The absence of known exploits suggests a window for proactive mitigation before widespread exploitation occurs.

European organizations should prioritize the following specific actions: 1) Conduct an immediate inventory to identify deployments of Ajay Top 10 up to version 4.1.0 within their environment. 2) Implement strict input validation and output encoding on all user-supplied data fields, particularly those rendered in HTML contexts, to neutralize malicious scripts. 3) Apply web application firewalls (WAFs) with custom rules targeting typical XSS payload patterns related to this vulnerability. 4) Enforce the principle of least privilege for user accounts to reduce the impact of compromised credentials. 5) Educate users and administrators about the risks of social engineering and the importance of cautious interaction with unexpected content. 6) Monitor logs and web traffic for anomalous script injections or unusual user activities indicative of exploitation attempts. 7) Engage with the vendor or security community for timely patches or updates, and plan for rapid deployment once available. 8) Consider implementing Content Security Policy (CSP) headers to restrict script execution sources, mitigating the impact of injected scripts. These measures, combined, will reduce the likelihood and impact of exploitation beyond generic advice.