Invoices Add-on for iThemes Exchange before 1.4.0 for WordPress has XSS via add_query_arg() and remove_query_arg().

The woocommerce-pdf-invoices-packing-slips plugin before 2.0.13 for WordPress has XSS via the tab or section variable on settings screens.

Multiple cross-site request forgery (CSRF) vulnerabilities in Simple Invoices 2013.1.beta.8 allow remote attackers to hijack the authentication of admins for requests that can (1) create new administrator user accounts and take over the entire application, (2) create regular user accounts, or (3) change configuration parameters such as tax rates and the enable/disable status of PayPal payment modules.

Multiple cross-site scripting (XSS) vulnerabilities in SimpleInvoices before stable-2012-1-CIS3000 allow remote attackers to inject arbitrary web script or HTML via (1) the having parameter in a manage action to index.php; (2) the Email field in an Add User action; (3) the Customer Name field in an Add Customer action; the (4) Street address, (5) Street address 2, (6) City, (7) Zip code, (8) State, (9) Country, (10) Mobile Phone, (11) Phone, (12) Fax, (13) Email, (14) PayPal business name, (15) PayPal notify url, (16) PayPal return url, (17) Eway customer ID, (18) Custom field 1, (19) Custom field 2, (20) Custom field 3, or (21) Custom field 4 field in an Add Biller action; (22) the Customer field in an Add Invoice action; the (23) Invoice or (24) Notes field in a Process Payment action; (25) the Payment type description field in a Payment Types action; (26) the Description field in an Invoice Preferences action; (27) the Description field in a Manage Products action; or (28) the Desc…

SQL injection vulnerability in the ccInvoices (com_ccinvoices) component for Joomla! allows remote attackers to execute arbitrary SQL commands via the id parameter in a viewInv action to index.php.

SQL injection vulnerability in index.php in Simple Invoices 2007 05 25 allows remote attackers to execute arbitrary SQL commands via the submit parameter in an email action.

include/auth/auth.php in Simple Invoices before 2007 03 05 does not use the login system to protect print preview pages for invoices, which might allow attackers to obtain sensitive information.

PHP remote file inclusion vulnerability in controller.php in Simple Invoices before 20070202 allows remote attackers to execute arbitrary PHP code via a URL in the (1) module or (2) view parameter. NOTE: some of these details are obtained from third party information.