CVE-2025-7141 is a cross-site scripting (XSS) vulnerability identified in version 1.0 of the SourceCodester Best Salon Management System, specifically within the /panel/edit_plan.php file of the Update Staff Page component. The vulnerability arises from improper input validation or sanitization, allowing an attacker to inject malicious scripts into the web application. When a victim accesses the affected page, the injected script executes in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability is remotely exploitable without requiring authentication, but user interaction is necessary for the malicious payload to execute (e.g., the user must visit the compromised page). The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:H indicates high privileges required, but this conflicts with the description; assuming a discrepancy, the description states remote exploitability), user interaction required (UI:P), and limited impact on integrity (VI:L) with no impact on confidentiality or availability. The exploit has been publicly disclosed but no known active exploitation in the wild has been reported yet. This vulnerability is classified as medium severity due to its moderate impact and exploitation conditions.

For European organizations using the SourceCodester Best Salon Management System version 1.0, this XSS vulnerability poses risks primarily to the confidentiality and integrity of user sessions and data. Attackers could leverage this flaw to hijack sessions of salon staff or administrators, potentially gaining unauthorized access to sensitive customer information or internal management functions. This could lead to data breaches involving personal data protected under GDPR, resulting in regulatory penalties and reputational damage. Additionally, attackers might use the vulnerability to conduct phishing or social engineering attacks by injecting deceptive content. Although the vulnerability does not directly affect system availability, the indirect consequences of compromised credentials or unauthorized changes could disrupt business operations. The impact is more pronounced for organizations with high staff interaction with the affected page and those lacking robust input validation or web application firewalls.

To mitigate this vulnerability, organizations should prioritize applying any available patches or updates from the vendor once released. In the absence of official patches, immediate steps include implementing strict input validation and output encoding on the /panel/edit_plan.php page to neutralize malicious scripts. Employing Content Security Policy (CSP) headers can help restrict the execution of unauthorized scripts. Web Application Firewalls (WAFs) should be configured to detect and block XSS attack patterns targeting this endpoint. Regular security audits and code reviews focusing on input handling in the affected component are recommended. Additionally, educating staff about the risks of clicking on suspicious links and monitoring logs for unusual activity can reduce exploitation likelihood. Segmentation of the salon management system from critical networks and limiting user privileges can further contain potential damage.