CVE-2025-12251 is a cross-site scripting vulnerability identified in OpenWGA version 7.11.12 Build 737, specifically impacting an unspecified function within the Admin UI component. OpenWGA is a web content management system used to build and manage websites and web applications. The vulnerability allows an attacker to remotely inject malicious scripts into the Admin UI without requiring authentication, although user interaction is necessary to trigger the exploit. The attack vector is network-based with low attack complexity and no privileges required, but it does require user interaction, such as an administrator clicking a crafted link or visiting a malicious page. The vulnerability affects the confidentiality and integrity of the application by potentially enabling session hijacking, credential theft, or unauthorized actions within the Admin UI. The vendor was notified early but has not issued any response or patch, and no official remediation is currently available. The CVSS v4.0 base score is 5.1, indicating a medium severity level. The exploit has been publicly disclosed but is not known to be actively exploited in the wild. The lack of detailed technical information about the exact vulnerable function limits deeper analysis, but the risk remains significant given the administrative context of the affected component.

For European organizations, the impact of this vulnerability could be significant if OpenWGA is used to manage critical web infrastructure or sensitive content. Successful exploitation could lead to session hijacking of administrative users, unauthorized changes to website content, or exposure of sensitive administrative data. This could result in reputational damage, data integrity issues, and potential compliance violations under regulations such as GDPR if personal data is exposed or manipulated. The remote nature of the attack and lack of required privileges increase the risk, especially in environments where the Admin UI is accessible over the internet without sufficient access controls. However, the requirement for user interaction and the medium CVSS score somewhat limit the immediacy of the threat. Organizations relying heavily on OpenWGA for public-facing websites or internal portals should consider the risk elevated, particularly if they have not implemented compensating controls.

1. Restrict access to the OpenWGA Admin UI to trusted networks or VPNs to reduce exposure to remote attackers. 2. Implement strict web application firewall (WAF) rules that detect and block common XSS attack patterns targeting the Admin UI. 3. Educate administrators and users about the risk of clicking on suspicious links or visiting untrusted websites to mitigate user interaction requirements. 4. Monitor web server and application logs for unusual requests or error patterns indicative of attempted XSS exploitation. 5. If possible, disable or limit the functionality of the vulnerable Admin UI component until a patch or official fix is released. 6. Consider deploying Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts within the Admin UI context. 7. Engage with the vendor or community to seek updates or unofficial patches and track any future advisories. 8. Conduct regular security assessments and penetration tests focusing on web application vulnerabilities including XSS in OpenWGA deployments.