SQL Injection in CMSsite 1.0 category.php cat_id Parameter

Successful exploitation allows a remote, unauthenticated attacker to read sensitive data from the application's backend database. The disclosed impact includes extraction of usernames and credentials. The provided CVSS information also indicates limited integrity impact due to attacker-controlled query manipulation, though no availability impact is described in the supplied content.

If an official fix is not available, restrict external access to the vulnerable application, especially category.php, through network controls, reverse proxy rules, or IP allowlisting where feasible. Implement web application firewall rules to detect and block SQL injection payloads targeting the cat_id parameter. Add server-side input validation to only accept expected numeric values for cat_id, and monitor logs for suspicious requests to category.php containing SQL metacharacters or anomalous query patterns.

Upgrade to a fixed version of CMSsite if one is available from the vendor or maintainer. In the vulnerable code path, eliminate dynamic SQL construction using untrusted input from cat_id and replace it with parameterized queries or prepared statements. Apply strict server-side validation and type enforcement for cat_id as an integer before it is used in any database operation. Review category.php and related database access code for similar injection patterns.