CVE-2025-57968 is a high-severity reflected Cross-site Scripting (XSS) vulnerability identified in the e4jvikwp VikRestaurants Table Reservations and Take-Away software, affecting versions up to 1.4. This vulnerability arises from improper neutralization of user input during web page generation, classified under CWE-79. Specifically, the application fails to adequately sanitize or encode input parameters that are reflected back in HTTP responses, enabling an attacker to inject malicious scripts. When a victim interacts with a crafted URL or input, the injected script executes in the victim’s browser context, potentially leading to session hijacking, credential theft, unauthorized actions on behalf of the user, or delivery of further malware. The CVSS 3.1 base score is 7.1, indicating a high severity level. The vector string (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L) shows that the attack can be launched remotely over the network without privileges, requires user interaction (e.g., clicking a malicious link), and impacts confidentiality, integrity, and availability to a limited extent. The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. No public exploits are known yet, and no patches have been published at the time of reporting. The vulnerability is significant because VikRestaurants is used for managing table reservations and take-away orders, which often involves sensitive customer data and business operations. Exploitation could allow attackers to hijack user sessions or manipulate reservation data, undermining trust and operational integrity.

For European organizations using VikRestaurants Table Reservations and Take-Away, this vulnerability poses a tangible risk to customer data confidentiality and business process integrity. Attackers exploiting reflected XSS can steal session cookies or authentication tokens, leading to unauthorized access to reservation systems and potentially exposing personal customer information, including names, contact details, and order history. This can result in reputational damage, regulatory non-compliance (e.g., GDPR violations), and financial losses. Additionally, attackers could manipulate reservation data, causing operational disruptions such as double bookings or cancellations, impacting customer satisfaction and revenue. The vulnerability’s ability to affect availability, though limited, could also degrade service quality. Since the vulnerability requires user interaction, phishing or social engineering campaigns targeting customers or staff are likely attack vectors. The absence of a patch increases the window of exposure, emphasizing the need for proactive mitigation. Given the hospitality sector’s importance in Europe and the sensitivity of customer data handled, the impact is considerable.

1. Immediate implementation of input validation and output encoding: Organizations should enforce strict server-side validation of all user inputs and apply context-appropriate output encoding (e.g., HTML entity encoding) before reflecting data in web pages. 2. Use of Web Application Firewalls (WAFs): Deploy WAFs with rules to detect and block common XSS attack patterns targeting the VikRestaurants application. 3. Content Security Policy (CSP): Implement CSP headers to restrict the execution of unauthorized scripts in browsers, mitigating the impact of injected scripts. 4. User awareness training: Educate staff and customers about phishing risks and the dangers of clicking suspicious links. 5. Monitor logs and network traffic for anomalous requests that may indicate exploitation attempts. 6. Engage with the vendor or community to obtain patches or updates as soon as they become available and prioritize timely application. 7. If feasible, temporarily disable or restrict access to vulnerable components until a fix is applied. 8. Conduct regular security assessments and penetration tests focusing on injection vulnerabilities in the reservation system.