CVE-2025-10027 is a cross-site scripting (XSS) vulnerability identified in version 1.0 of the itsourcecode POS Point of Sale System. The vulnerability resides in an unspecified functionality within the file /inventory/main/vendors/datatables/unit_testing/templates/2512.php. Specifically, the issue arises from improper sanitization or validation of the 'scripts' argument, which allows an attacker to inject malicious scripts. This vulnerability can be exploited remotely without requiring authentication, although user interaction is necessary to trigger the malicious script execution. The vulnerability has been publicly disclosed, increasing the risk of exploitation, although no known exploits are currently reported in the wild. The CVSS 4.0 base score is 5.1, indicating a medium severity level. The vector details show that the attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:L - low privileges), and user interaction needed (UI:P). The impact on confidentiality is none, integrity is low, and availability is none, indicating that the main risk is the execution of malicious scripts in the context of the POS system's web interface, potentially leading to session hijacking, credential theft, or unauthorized actions within the POS system interface. Given the POS system context, an attacker could leverage this XSS to manipulate transactions or steal sensitive payment or customer data if combined with other vulnerabilities or social engineering techniques.

For European organizations using the itsourcecode POS Point of Sale System version 1.0, this XSS vulnerability poses a moderate risk. POS systems are critical infrastructure in retail and hospitality sectors, handling sensitive payment and customer data. Exploitation could allow attackers to execute malicious scripts in the context of the POS system's web interface, potentially leading to theft of session tokens, unauthorized transaction manipulation, or delivery of further malware payloads. This could result in financial losses, reputational damage, and regulatory non-compliance, especially under GDPR requirements for protecting personal data. The remote exploitability without authentication increases the risk, particularly in environments where the POS system interfaces are accessible over internal networks or exposed to the internet. However, the requirement for user interaction somewhat limits the attack scope, as an attacker would need to trick a user into triggering the malicious payload. The medium severity score reflects these factors. Organizations relying on this POS system should consider the potential for targeted attacks, especially in high-volume retail or hospitality chains in Europe, where the impact of fraud or data breaches can be significant.

To mitigate this vulnerability effectively, European organizations should: 1) Immediately check for and apply any official patches or updates from itsourcecode addressing CVE-2025-10027. If no patch is available, implement input validation and output encoding on the 'scripts' argument within the affected PHP file to neutralize malicious script injection. 2) Restrict network access to the POS system's web interfaces, ensuring they are not exposed to untrusted networks or the internet. Use network segmentation and firewalls to limit access only to authorized personnel. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in the POS system's web interface. 4) Educate staff on the risks of phishing or social engineering that could trigger user interaction required for exploitation. 5) Monitor logs and network traffic for unusual activities indicative of attempted XSS exploitation. 6) Consider deploying web application firewalls (WAF) with rules to detect and block XSS payloads targeting the POS system. 7) Conduct regular security assessments and code reviews of the POS system, especially if customized or integrated with other systems, to identify and remediate similar vulnerabilities.