CVE-2025-7926 is a cross-site scripting (XSS) vulnerability identified in version 1.0 of the PHPGurukul Online Banquet Booking System, specifically within the /admin/booking-search.php file. The vulnerability arises due to improper sanitization or validation of the 'searchdata' parameter, which can be manipulated by an attacker to inject malicious scripts. This flaw allows remote attackers to execute arbitrary JavaScript code in the context of the administrator's browser session without requiring authentication, though user interaction is necessary to trigger the payload. The vulnerability is classified as problematic with a CVSS 4.0 base score of 5.1 (medium severity), reflecting moderate impact and ease of exploitation. The attack vector is network-based (remote), with low attack complexity and no privileges required, but it does require user interaction. The impact primarily affects confidentiality and integrity by potentially enabling session hijacking, credential theft, or unauthorized actions performed with the administrator's privileges. Availability impact is minimal. Although no public exploits are currently known in the wild, the vulnerability has been publicly disclosed, increasing the risk of exploitation. The lack of patches or mitigations from the vendor at this time further elevates the urgency for organizations using this software to implement compensating controls.

For European organizations utilizing PHPGurukul Online Banquet Booking System 1.0, this XSS vulnerability poses a tangible risk to administrative accounts and the integrity of booking management operations. Successful exploitation could lead to unauthorized access to sensitive booking data, manipulation of reservations, or compromise of administrator credentials, potentially cascading into broader network access if credentials are reused. Given the administrative context, attackers could also inject malicious scripts to pivot attacks internally or conduct phishing campaigns targeting staff. While the direct availability impact is low, the confidentiality and integrity breaches could result in reputational damage, regulatory non-compliance (e.g., GDPR violations due to data exposure), and financial losses. The medium severity rating suggests that while the threat is not critical, it should not be ignored, especially in environments where banquet booking systems are integrated with other business-critical applications or contain personally identifiable information (PII) of clients.

1. Immediate mitigation should include implementing strict input validation and output encoding on the 'searchdata' parameter within /admin/booking-search.php to neutralize malicious scripts. 2. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in the administrator interface. 3. Restrict access to the admin panel by IP whitelisting or VPN-only access to reduce exposure. 4. Monitor web server logs for unusual query parameters or repeated attempts to inject scripts. 5. Educate administrators about the risks of clicking on suspicious links or inputs that could trigger XSS attacks. 6. If possible, isolate the banquet booking system from other critical internal systems to limit lateral movement. 7. Engage with the vendor or community to obtain or develop patches addressing this vulnerability. 8. Regularly update and audit all web applications for similar injection flaws to prevent future occurrences.