CVE-2025-13575 identifies a SQL injection vulnerability in the code-projects Blog Site version 1.0, specifically within the category_exists function located in the /resources/functions/blog.php file, part of the Category Handler component. The vulnerability arises from improper sanitization or validation of the 'name' or related input fields, allowing an attacker to inject malicious SQL code remotely without requiring authentication or user interaction. This injection can manipulate backend SQL queries, potentially leading to unauthorized data access, modification, or deletion. Multiple endpoints are affected, increasing the attack surface. The vulnerability has been publicly disclosed, though no active exploits have been reported in the wild yet. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L - low privileges), no user interaction (UI:N), and low impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). This suggests that an attacker with limited privileges can exploit the flaw remotely to partially compromise the system. The lack of a patch link indicates that a fix may not yet be available, emphasizing the need for immediate mitigation steps. The vulnerability's presence in a blogging platform used for content management means that exploitation could lead to data leakage, defacement, or further compromise of the hosting environment.

For European organizations, the impact of this vulnerability includes potential unauthorized access to sensitive blog content, user data, or backend database information. Attackers could manipulate or delete data, leading to integrity and availability issues such as content tampering or denial of service. Given the public disclosure and multiple affected endpoints, the risk of exploitation increases, potentially damaging organizational reputation and violating data protection regulations like GDPR if personal data is exposed. Organizations relying on code-projects Blog Site for public-facing content or internal communications may face operational disruptions and increased incident response costs. The medium CVSS score reflects moderate risk but should not be underestimated, especially in sectors where content integrity and availability are critical. The vulnerability could also serve as a foothold for further lateral movement within a network if exploited by attackers.

1. Immediately review and restrict database user permissions to the minimum necessary, preventing excessive privileges that could be exploited via SQL injection. 2. Implement input validation and sanitization on all user-supplied data, especially the parameters handled by the category_exists function. 3. Refactor the vulnerable code to use parameterized queries or prepared statements to eliminate direct concatenation of user inputs into SQL commands. 4. Monitor web application logs and network traffic for unusual SQL query patterns or repeated requests targeting the vulnerable endpoints. 5. If a patch becomes available from the vendor, prioritize its deployment after testing. 6. Employ Web Application Firewalls (WAFs) with rules designed to detect and block SQL injection attempts targeting the affected endpoints. 7. Conduct security audits and penetration testing focused on injection vulnerabilities in the blog platform. 8. Educate developers and administrators on secure coding practices and the risks of SQL injection to prevent similar issues in future releases.