Email Subscribers & Newsletters < 4.3.1 - Unauthenticated Blind SQL Injection

8.3
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE CVE-2019-20361
CVSS 8.3 (High)
Publicly Published November 13, 2019
Last Updated January 22, 2024
Researcher Matt Barry - Wordfence

Description

There was a flaw in the WordPress plugin, Email Subscribers & Newsletters before 4.3.1, that allowed SQL statements to be passed to the database in the hash parameter (a blind SQL injection vulnerability).

Learn more about SQL Injection vulnerabilities and how to prevent them.

References

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Vulnerability Details for Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress

Software Type Plugin
Software Slug email-subscribers (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.3.1, or a newer patched version
Affected Version
  • <= 4.3.0
Patched Version
  • 4.3.1

Recent vulnerabilities in Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress

# Title CVE ID CVSS Researchers Date
1 Email Subscribers by Icegram Express <= 5.9.34 - Missing Authorization CVE-2026-83555 5.3 Usama Arshad September 21, 2026
2 Email Subscribers & Newsletters <= 5.9.27 - Unauthenticated Arbitrary Shortcode Execution via Subscriber Name Field CVE-2026-12757 6.5 Sander Horsman September 7, 2026
3 Icegram Express <= 5.8.5 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2025-15692 4.4 Dmitrii Ignatyev September 1, 2026
4 Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress <= 5.9.33 - Unauthenticated Stored Cross-Site Scripting CVE-2026-81290 7.2 Jiemook August 27, 2026
5 Email Subscribers & Newsletters <= 5.9.27 - Missing Authorization to Authenticated (Contributor+) Settings Modification via ig_es_handle_request AJAX Action CVE-2026-11592 4.3 Dmitrii Ignatyev July 1, 2026
6 Email Subscribers & Newsletters <= 5.9.16 - Authenticated (Administrator+) SQL Injection via 'workflow_ids' Parameter CVE-2026-1651 6.5 Chiao-Lin Yu (Steven Meow) March 3, 2026
7 Email Subscribers & Newsletters <= 5.9.10 - Missing Authentication to Unauthenticated Action Scheduler Task Execution CVE-2025-12348 5.3 Adrian Lukita December 11, 2025
8 Email Subscribers & Newsletters <= 5.9.10 - Missing Authentication to Unauthenticated Mailing Queue Trigger CVE-2025-12349 5.3 Adrian Lukita November 18, 2025
9 Email Subscribers & Newsletters <= 5.9.10 - Authenticated (Administrator+) PHP Object Injection CVE-2025-66055 6.6 Ananda Dhakal November 8, 2025
10 Email Subscribers & Newsletters <= 5.7.49 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2025-0671 4.4 Dmitrii Ignatyev April 3, 2025

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