CVE-2025-5765 is a cross-site scripting (XSS) vulnerability identified in version 1.0 of the code-projects Laundry System, specifically affecting the /data/edit_laundry.php file. The vulnerability arises from improper sanitization or validation of the 'Customer' parameter, which allows an attacker to inject malicious scripts. This flaw can be exploited remotely without requiring authentication, although user interaction is necessary to trigger the malicious payload, such as by convincing a user to click a crafted link or visit a compromised page. The vulnerability has been publicly disclosed, increasing the risk of exploitation, but no known exploits have been observed in the wild yet. The CVSS 4.0 base score is 5.1, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges required, but it does require user interaction. The impact primarily affects confidentiality and integrity at a limited level, as the vulnerability can be used to execute arbitrary scripts in the context of the victim's browser, potentially leading to session hijacking, defacement, or redirection to malicious sites. Availability impact is negligible. Since the vulnerability affects a specific web application used for laundry management, the scope is limited to organizations deploying this software. No patches or mitigations have been officially released yet, and the vulnerability details are limited, but the risk is elevated due to public disclosure.

For European organizations using the code-projects Laundry System 1.0, this vulnerability poses a moderate risk. Exploitation could lead to theft of user credentials, session tokens, or other sensitive information entered into the application, potentially allowing attackers to impersonate legitimate users or manipulate laundry service data. This could disrupt business operations, damage customer trust, and lead to compliance issues under regulations like GDPR if personal data is compromised. The impact is more significant for organizations with a large customer base or those integrating the Laundry System with other internal systems, as lateral movement or data leakage could occur. However, since the vulnerability requires user interaction and targets a niche application, the overall impact is somewhat contained. Nonetheless, attackers could leverage this vulnerability as an initial foothold or part of a broader attack chain targeting service providers or facilities management companies in Europe.

European organizations should immediately audit their use of the code-projects Laundry System 1.0 and assess exposure to the vulnerable /data/edit_laundry.php endpoint. Practical mitigation steps include: 1) Implementing strict input validation and output encoding on the 'Customer' parameter to neutralize malicious scripts; 2) Employing Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts; 3) Educating users about the risks of clicking unknown or suspicious links related to the laundry system; 4) Monitoring web server logs for unusual requests targeting the vulnerable parameter; 5) Isolating the Laundry System application within a segmented network zone to limit potential lateral movement; 6) Considering temporary disabling or restricting access to the affected functionality until a vendor patch is available; 7) Applying web application firewalls (WAFs) with rules to detect and block XSS payloads targeting this application; 8) Engaging with the vendor or community to obtain or develop patches or updates addressing the vulnerability. These steps go beyond generic advice by focusing on the specific vulnerable parameter and the operational context of the Laundry System.