CVE-2025-10631 is a cross-site scripting (XSS) vulnerability identified in version 1.0 of the itsourcecode Online Petshop Management System, specifically within the addcnp.php file of the Available Products Page component. The vulnerability arises from improper sanitization or validation of user-supplied input in the 'name' and 'description' parameters. An attacker can manipulate these parameters to inject malicious scripts that execute in the context of the victim's browser when viewing the affected page. The vulnerability is remotely exploitable without requiring authentication, although it requires user interaction to trigger the malicious payload (e.g., a victim clicking a crafted link or viewing a manipulated page). The CVSS 4.0 base score is 5.1, indicating a medium severity level. The attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:L - low privileges), and user interaction required (UI:P). The vulnerability impacts the confidentiality and integrity of user data by potentially allowing session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The availability impact is negligible. No patches or fixes are currently linked, and no known exploits are reported in the wild, though public exploit code exists, increasing the risk of exploitation. This vulnerability is typical of web applications that fail to properly encode or sanitize input before rendering it in HTML pages, making it a classic reflected or stored XSS scenario depending on the application context.

For European organizations using the itsourcecode Online Petshop Management System version 1.0, this vulnerability poses a moderate risk. Exploitation could lead to theft of session cookies, user credentials, or other sensitive information, enabling attackers to impersonate legitimate users or perform unauthorized actions within the application. This can result in data breaches, loss of customer trust, and potential regulatory non-compliance under GDPR due to exposure of personal data. Additionally, attackers could leverage the XSS flaw to deliver further malware or phishing attacks targeting employees or customers. The impact is particularly significant for organizations handling sensitive customer information or payment data through this system. Given the remote exploitability and public availability of exploit code, the window for attackers to leverage this vulnerability is considerable if unpatched. However, the requirement for user interaction somewhat limits the attack scope to scenarios where users can be socially engineered or tricked into triggering the malicious payload.

To mitigate this vulnerability, organizations should immediately implement input validation and output encoding on the 'name' and 'description' parameters within the addcnp.php file. Specifically, all user-supplied input should be sanitized to remove or encode HTML special characters before rendering in the web page to prevent script injection. Employing a robust web application firewall (WAF) with rules targeting XSS payloads can provide a temporary protective layer. Additionally, organizations should educate users about the risks of clicking suspicious links or interacting with untrusted content. If possible, upgrading to a newer, patched version of the Online Petshop Management System should be prioritized once available. In the absence of an official patch, consider applying custom code fixes or disabling the vulnerable functionality temporarily. Regular security testing and code reviews should be conducted to identify and remediate similar issues proactively. Monitoring web server logs for suspicious requests targeting the vulnerable parameters can help detect exploitation attempts early.