WordPress Plugin 'Email Subscribers & Newsletters' < 4.5.6 Email Forgery/Spoofing Vulnerability.

medium Nessus Plugin ID 140577


The remote WordPress application has a plugin installed that is vulnerable to an email forgery/spoofing vulnerability.


The WordPress application running on the remote host has a version of the 'Email Subscribers & Newsletters' plugin that is affected by an email forgery/spoofing vulnerability in the class-es-newsletters.php class due to missing authentication for a critical function. An unauthenticated, remote attacker can exploit this via a specially crafted ajax request, to send forged email to all recipients from the available lists of contacts or subscribers, with complete control over the content and subject of the email.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Update the 'Email Subscribers & Newsletters' plugin to version 4.5.6 or later.

See Also


Plugin Details

Severity: Medium

ID: 140577

File Name: wordpress_plugin_email_subscribers_4_5_6_forged_emails.nasl

Version: 1.4

Type: remote

Family: CGI abuses

Published: 9/14/2020

Updated: 1/4/2021

Risk Information


Risk Factor: Low

Score: 2.2


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2020-5780


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:wordpress:wordpress

Required KB Items: installed_sw/WordPress, www/PHP

Exploit Ease: No known exploits are available

Patch Publication Date: 9/9/2020

Vulnerability Publication Date: 9/9/2020

Reference Information

CVE: CVE-2020-5780