WWBN AVideo is an open source video platform. Prior to version 26.0, an unauthenticated SQL injection vulnerability exists in objects/category.php in the getAllCategories() method. The doNotShowCats request parameter is sanitized only by stripping single-quote characters (str_replace("'", '', ...)), but this is trivially bypassed using a backslash escape technique to shift SQL string boundaries. The parameter is not covered by any of the application's global input filters in objects/security.php. Version 26.0 contains a patch for the issue.