CVE-2025-7800 is a cross-site scripting (XSS) vulnerability identified in the cgpandey hotelmis software, specifically affecting the admin.php file's HTTP GET request handler. The vulnerability arises from improper sanitization or validation of the 'Search' parameter, allowing an attacker to inject malicious scripts that execute in the context of the victim's browser. This flaw can be exploited remotely without authentication, although it requires some user interaction (such as an administrator clicking a crafted link). The vulnerability is classified as 'problematic' with a CVSS 4.0 base score of 5.1, indicating a medium severity level. The rolling release model of the product means exact affected versions are not clearly delineated, but the vulnerability exists up to the commit hash c572198e6c4780fccc63b1d3e8f3f72f825fc94e. No patches or updates have been publicly disclosed yet, and no known exploits are currently in the wild. The vulnerability impacts confidentiality and integrity to a limited extent by potentially allowing session hijacking, credential theft, or unauthorized actions performed in the context of an authenticated user. Availability impact is negligible. The attack vector is network-based with low attack complexity and no privileges required, but user interaction is necessary for exploitation.

For European organizations using the cgpandey hotelmis system, this XSS vulnerability poses risks primarily to administrative users who manage hotel information systems. Successful exploitation could lead to theft of session cookies or credentials, enabling attackers to impersonate administrators and potentially manipulate sensitive hotel data or booking information. This could result in data breaches, reputational damage, and operational disruptions. Since the vulnerability requires user interaction, phishing or social engineering campaigns targeting hotel staff are likely attack vectors. The impact on confidentiality and integrity is moderate, but availability is unlikely to be affected. Given the hospitality sector's importance in Europe, especially in countries with large tourism industries, exploitation could have financial and regulatory consequences, including GDPR compliance issues if personal data is compromised.

To mitigate this vulnerability, organizations should implement strict input validation and output encoding for the 'Search' parameter in the admin.php component to prevent script injection. Employing Content Security Policy (CSP) headers can help reduce the impact of any injected scripts. Until an official patch is released, organizations should restrict access to the admin interface via network segmentation and VPNs, limiting exposure to trusted personnel only. User training to recognize phishing attempts is critical to reduce the risk of social engineering exploitation. Regular monitoring of web logs for suspicious requests targeting the 'Search' parameter can help detect exploitation attempts. Additionally, applying web application firewalls (WAFs) with rules to detect and block XSS payloads targeting this parameter can provide a temporary protective layer. Organizations should track updates from the vendor and apply patches promptly once available.