Fortinet Discovers WordPress Newsletter Plugin CSV Injection Vulnerability


Fortinet's FortiGuard Labs has discovered a CSV Injection vulnerability in WordPress Newsletter plugin.

Newsletter Plugin is a popular newsletter and email marketing system for any Wordpress blog. It offers several custom features and free addons. The plugin has over 300,000+ active installations.

A CSV Injection vulnerability was discovered in Wordpress Newsletter plugin. It allows a user with low level privileges or no privileges to inject a command in subscription form that will be included in the exported CSV file, leading to possible code execution.


FortiGuard Labs released the following FortiGate IPS signature which covers this specific vulnerability:

Released Mar 16, 2020

Users should update to the latest version 6.5.4.


Fortinet reported the vulnerability to the Newsletter Plugin Team on March 05, 2020

The Newsletter Plugin team confirmed the vulnerability on March 06, 2020

The Newsletter Plugin Team patched the vulnerability on March 09, 2020


This vulnerability was discovered by Vishnupriya Ilango of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.