CVE-2025-10063 is a cross-site scripting (XSS) vulnerability identified in the itsourcecode POS Point of Sale System version 1.0. The vulnerability exists in the file /inventory/main/vendors/datatables/unit_testing/templates/deferred_table.php, where improper sanitization or validation of the 'scripts' argument allows an attacker to inject malicious scripts. This flaw enables remote attackers to execute arbitrary JavaScript code in the context of the affected web application without requiring authentication. The vulnerability is exploitable remotely and requires user interaction (e.g., a victim clicking a crafted link or visiting a malicious page). The CVSS 4.0 base score is 5.3 (medium severity), reflecting that the attack vector is network-based with low attack complexity, no privileges or user authentication required, but user interaction is necessary. The impact on confidentiality is none, integrity impact is low, and availability impact is none. The vulnerability could be leveraged to perform actions such as session hijacking, defacement, or redirecting users to malicious sites, potentially leading to further exploitation or data theft. Although no known exploits are currently in the wild, public exploit code is available, increasing the risk of exploitation. The vulnerability affects only version 1.0 of the itsourcecode POS system, which is used in retail environments to manage sales and inventory data. Given the POS system's role in handling sensitive transactional data, exploitation could undermine trust and lead to indirect financial and reputational damage.

For European organizations using the itsourcecode POS Point of Sale System 1.0, this vulnerability poses a risk primarily to the integrity of their web interfaces and the security of customer sessions. Successful exploitation could allow attackers to steal session cookies or credentials, manipulate displayed data, or redirect users to malicious sites, potentially leading to fraud or further compromise. While the vulnerability does not directly impact confidentiality or availability, the indirect consequences could include loss of customer trust, regulatory scrutiny under GDPR for insufficient security controls, and financial losses due to fraud or remediation costs. Retailers and service providers relying on this POS system may face operational disruptions if customers or staff are exposed to malicious scripts. Additionally, attackers could use this vulnerability as a foothold to launch more sophisticated attacks within the network. The medium severity rating suggests that while the risk is not critical, it should be addressed promptly to prevent exploitation, especially given the availability of public exploit code.

To mitigate CVE-2025-10063, organizations should: 1) Immediately apply any available patches or updates from itsourcecode vendor; if no official patch exists, implement manual input validation and output encoding on the 'scripts' parameter to neutralize malicious payloads. 2) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts within the POS web interface. 3) Conduct thorough code reviews focusing on input handling in the affected PHP file and related components to identify and remediate similar injection points. 4) Limit exposure of the POS system's web interface to trusted networks only, using network segmentation and firewall rules to reduce attack surface. 5) Educate staff and users about the risks of clicking untrusted links or interacting with suspicious content related to the POS system. 6) Monitor web server logs and application behavior for signs of exploitation attempts, such as unusual script injections or user session anomalies. 7) Consider deploying web application firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting the vulnerable parameter. These steps go beyond generic advice by focusing on both immediate technical controls and longer-term security hygiene tailored to the POS environment.