CVE-2025-47676 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the 'User Login History' product developed by Faiyaz Alam. This vulnerability arises due to improper neutralization of 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 impacts versions up to 2.1.6, although exact affected versions are not fully specified. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vector string (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) reveals that the vulnerability can be exploited remotely over the network with low attack complexity, requires low privileges, and user interaction is necessary. The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability at a low level. Stored XSS vulnerabilities allow attackers to inject malicious JavaScript code that is permanently stored on the target server and executed when other users access the affected content. This can lead to session hijacking, defacement, or redirection to malicious sites, and in some cases, privilege escalation or further exploitation depending on the victim's privileges and the application's context. No known exploits are currently reported in the wild, and no official patches have been linked yet. The vulnerability was published on May 7, 2025, and has been enriched by CISA, indicating recognition by authoritative cybersecurity entities.

For European organizations using the 'User Login History' product by Faiyaz Alam, this vulnerability poses a significant risk, especially in environments where multiple users access login history data through web interfaces. The stored XSS can lead to unauthorized disclosure of sensitive information such as session tokens or user credentials, potentially enabling lateral movement within the network. The integrity of user data and login records can be compromised, undermining trust in audit logs and security monitoring. Availability impact, while rated low, could manifest through denial-of-service conditions caused by malicious scripts. Given the medium CVSS score and the requirement for low privileges but user interaction, the threat is particularly relevant for internal users or low-privilege accounts that have access to the affected functionality. European organizations in sectors with strict data protection regulations (e.g., GDPR) face additional compliance risks if user data is exposed or manipulated. The vulnerability could also be leveraged in targeted phishing or social engineering campaigns to escalate attacks within corporate networks.

1. Immediate mitigation should include input validation and output encoding on all user-supplied data rendered in the User Login History interface to neutralize malicious scripts. 2. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 3. Implement strict access controls to limit which users can view or interact with login history data, minimizing exposure. 4. Monitor logs and user activity for unusual patterns indicative of exploitation attempts. 5. Since no official patches are currently available, organizations should consider isolating or restricting access to the affected component until a patch is released. 6. Educate users about the risks of clicking on suspicious links or interacting with unexpected content within the application. 7. Regularly update and audit third-party components and dependencies to detect and remediate similar vulnerabilities proactively. 8. Engage with the vendor or security community for updates on patches or workarounds and apply them promptly once available.