Contributor SQL Injection in Gallery <= 4.7.8 versions.

The imageid parameter of the AJAX call to the editimagebwg action of admin-ajax.php is vulnerable to reflected Cross Site Scripting. The value of the imageid parameter is embedded within an existing JavaScript within the response allowing arbitrary JavaScript to be inserted and executed. The attacker must target a an authenticated user with permissions to access this component to exploit this issue.

The imageurl parameter of the AJAX call to the editimagebwg action of admin-ajax.php is vulnerable to reflected Cross Site Scripting. The value of the imageurl parameter is embedded within an existing JavaScript within the response allowing arbitrary JavaScript to be inserted and executed. The attacker must target a an authenticated user with permissions to access this component to exploit this issue.

The currenturl parameter of the AJAX call to the GalleryBox action of admin-ajax.php is vulnerable to reflected Cross Site Scripting. The value of the currenturl parameter is embedded within an existing JavaScript within the response allowing arbitrary JavaScript to be inserted and executed. No authentication is required to exploit this issue. Note that other parameters within a AJAX call, such as imageid, must be valid for this vulnerability to be successfully exploited.

The image upload component allows SVG files and the regular expression used to remove script tags can be bypassed by using a Cross Site Scripting payload which does not match the regular expression; one example of this is the inclusion of whitespace within the script tag. An attacker must target an authenticated user with permissions to access this feature, however once uploaded the payload is also accessible to unauthenticated users.

The thumburl parameter of the AJAX call to the editimagebwg action of admin-ajax.php is vulnerable to reflected Cross Site Scripting. The value of the thumburl parameter is embedded within an existing JavaScript within the response allowing arbitrary JavaScript to be inserted and executed. The attacker must target a an authenticated user with permissions to access this component to exploit this issue.