Joomla! Component J-BusinessDirectory 4.9.7 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the type parameter. Attackers can send GET requests to index.php with the option=comjbusinessdirectory&task=categories.getCategories parameters and inject UNION-based SQL statements in the type parameter to extract database information including schema names and sensitive data.

The J-BusinessDirectory extension before 5.2.9 for Joomla! allows Reverse Tabnabbing. In some configurations, the link to the business website can be entered by any user. If it doesn't contain rel="noopener" (or similar attributes such as noreferrer), the tabnabbing may occur. To reproduce the bug, create a business with a website link that contains JavaScript to exploit the window.opener property (for example, by setting window.opener.location).