Exponent CMS 2.4.1 and earlier has SQL injection via a base64 serialized API key (apikey parameter) in the api function of framework/modules/eaas/controllers/eaasController.php.
An issue was discovered in Exponent CMS 2.4.1. This is a blind SQL injection that can be exploited by un-authenticated users via an HTTP GET request and which can be used to dump database data out to a malicious server, using an out-of-band technique, such as select_loadfile(). The vulnerability affects source_selector.php and the following parameter: src.