CVE-2025-7868 is a cross-site scripting (XSS) vulnerability identified in the Portabilis i-Educar software, versions 2.0 through 2.10. The vulnerability resides in the Calendar Module, specifically in the file /intranet/educar_calendario_dia_motivo_cad.php. The issue arises from improper handling and sanitization of the 'Motivo/descricao' parameter, which allows an attacker to inject malicious scripts. This vulnerability can be exploited remotely without authentication, requiring only user interaction (e.g., a victim clicking a crafted link or visiting a malicious page). 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 user interaction is necessary. The vulnerability impacts the confidentiality and integrity of user data by enabling script execution in the context of the victim's browser, potentially leading to session hijacking, credential theft, or unauthorized actions within the affected application. The vendor was notified but has not responded, and no patches or mitigations have been officially released. Although no known exploits are currently in the wild, the public disclosure of the exploit code increases the risk of exploitation. Given that i-Educar is an education management system, the vulnerability could affect educational institutions using this software, potentially exposing sensitive student and staff information and disrupting educational operations.

For European organizations, particularly educational institutions using Portabilis i-Educar, this vulnerability poses a risk of unauthorized access to sensitive personal data, including student records and staff information. Exploitation could lead to session hijacking, allowing attackers to impersonate users and perform unauthorized actions within the system. This could result in data breaches, loss of trust, and regulatory non-compliance under GDPR due to exposure of personal data. Additionally, successful exploitation could disrupt normal educational activities by injecting malicious scripts that alter or block calendar functionalities, impacting scheduling and communication. The medium severity score reflects a moderate risk, but the lack of vendor response and patches increases the urgency for organizations to implement mitigations. The remote exploitability and requirement for only user interaction mean that phishing or social engineering campaigns could be effective attack vectors, increasing the threat surface for European schools and educational authorities using this platform.

Given the absence of official patches, European organizations should implement immediate compensating controls. First, apply strict input validation and output encoding on the 'Motivo/descricao' parameter at the web application or web server level, if possible, to neutralize malicious scripts. Employ web application firewalls (WAFs) configured to detect and block common XSS attack patterns targeting this specific endpoint. Educate users and staff about the risks of clicking unknown links or interacting with suspicious content related to the i-Educar platform. Monitor web server and application logs for unusual activity or repeated attempts to access the vulnerable parameter. If feasible, isolate the affected module or restrict access to the intranet calendar functionality until a vendor patch is available. Engage with the vendor persistently to demand a timely security update. Additionally, review and strengthen Content Security Policy (CSP) headers to limit the execution of unauthorized scripts within the application context. Finally, ensure regular backups of critical data to enable recovery in case of compromise.