CVE-2025-56435 is a SQL Injection vulnerability identified in FoxCMS version 1.2.6 and earlier. The vulnerability exists in the /DataBackup.php file, specifically related to the 'id' parameter. An attacker can exploit this flaw by injecting malicious SQL code into the 'id' parameter, which is improperly sanitized or validated by the application. This allows the attacker to manipulate the backend database queries executed by the CMS. Although the CVSS score is 5.3 (medium severity), the vulnerability does not directly impact confidentiality or availability but compromises the integrity of the database. The attacker can alter data, potentially leading to unauthorized modifications or corruption of stored information. The vulnerability requires no authentication or user interaction and can be exploited remotely over the network, increasing its risk profile. However, there are no known exploits in the wild at the time of publication, and no official patches have been released yet. The vulnerability is categorized under CWE-89, which corresponds to SQL Injection, a common and critical web application security issue. The lack of a patch and the public disclosure mean that organizations using FoxCMS v1.2.6 or earlier should consider this a significant risk until mitigations or updates are applied.

For European organizations using FoxCMS, this vulnerability poses a moderate risk primarily to data integrity. Attackers exploiting the SQL Injection can modify or corrupt database records, potentially affecting website content, user data, or configuration settings. This could lead to misinformation, loss of trust, or operational disruptions if the CMS is used for critical content management. While confidentiality and availability impacts are not directly indicated, the integrity compromise can have cascading effects, such as enabling further attacks or causing business process failures. Organizations in sectors with strict data integrity requirements, such as government, finance, or healthcare, may face regulatory and reputational consequences if exploited. The remote and unauthenticated nature of the exploit increases the likelihood of automated scanning and attacks, especially if FoxCMS is publicly accessible. Given the absence of known exploits, the immediate risk is moderate, but the potential for future exploitation remains if patches are not applied promptly.

1. Immediate mitigation should include restricting access to the /DataBackup.php endpoint via web application firewalls (WAFs) or network-level controls to limit exposure. 2. Implement input validation and parameterized queries or prepared statements in the FoxCMS codebase to prevent SQL Injection. 3. Monitor web server and application logs for suspicious requests targeting the 'id' parameter in /DataBackup.php. 4. If possible, disable or remove the /DataBackup.php functionality temporarily until a patch is available. 5. Conduct a thorough audit of database integrity and backups to detect any unauthorized changes. 6. Engage with FoxCMS developers or community to obtain or request an official patch or update addressing this vulnerability. 7. Educate administrators and developers about secure coding practices to prevent similar vulnerabilities. 8. Consider deploying runtime application self-protection (RASP) tools to detect and block injection attempts dynamically.