Akaunting version 2.1.12 and earlier suffers from a denial-of-service issue that is triggered by setting a malformed 'locale' variable and sending it in an otherwise normal HTTP POST request. This issue was fixed in version 2.1.13 of the product.
Akaunting version 2.1.12 and earlier suffers from an authentication bypass issue in the user-controllable field, companies[0]. This issue was fixed in version 2.1.13 of the product.