CVE-2025-60302 identifies a Cross Site Scripting (XSS) vulnerability in the code-projects Client Details System version 1.0. The vulnerability arises when the application fails to properly sanitize or encode user-supplied input in the username field during the process of adding customer information. An attacker can inject malicious JavaScript code into this field, which is then executed by the browser of any user who views the affected page. This type of vulnerability can be exploited to perform a variety of malicious actions, including stealing session cookies, defacing web content, redirecting users to malicious websites, or executing arbitrary code within the victim's browser context. The vulnerability is classified as a reflected or stored XSS depending on how the input is handled and rendered. No CVSS score has been assigned yet, and there are no known exploits in the wild, indicating that exploitation may require some effort or is not yet widespread. The vulnerability affects version 1.0 of the software, but no patch or remediation guidance is currently available. The lack of CWE identifiers limits detailed classification, but the core issue is improper input validation and output encoding. The vulnerability was published on October 9, 2025, with the reservation date on September 26, 2025. The absence of a CVSS score requires an independent severity assessment based on impact and exploitability factors.

For European organizations using the code-projects Client Details System 1.0, this XSS vulnerability poses risks primarily to confidentiality and integrity of user sessions and data. Attackers could hijack authenticated sessions, leading to unauthorized access to customer information or administrative functions. This could result in data breaches, reputational damage, and regulatory non-compliance under GDPR due to exposure of personal data. The availability impact is generally low for XSS but could be leveraged in combination with other attacks to disrupt services. The threat is more significant for organizations with customer-facing portals or internal systems where multiple users access client details. Since no known exploits exist yet, the immediate risk is moderate, but the vulnerability could be weaponized if automated exploit tools emerge. European entities in finance, healthcare, or retail sectors that rely on this software for customer management are particularly vulnerable. The impact is compounded by the potential for phishing or social engineering attacks facilitated by malicious script execution.

To mitigate CVE-2025-60302, organizations should implement strict input validation and output encoding on all user-supplied data, especially in the username field of the client details system. Employ context-aware encoding (e.g., HTML entity encoding) to neutralize injected scripts. Use Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts. Monitor application logs for unusual input patterns or script injection attempts. Since no official patch is available, consider isolating or restricting access to the vulnerable system until remediation is provided. Conduct security testing, including automated and manual penetration tests, to identify and remediate similar vulnerabilities. Educate developers on secure coding practices to prevent XSS in future releases. If feasible, replace or upgrade the client details system to a more secure alternative. Maintain up-to-date backups and incident response plans to quickly recover from potential exploitation.