Email Subscribers & Newsletters <= 5.9.10 - Missing Authentication to Unauthenticated Mailing Queue Trigger

5.3
Missing Authentication for Critical Function
CVE CVE-2025-12349
CVSS 5.3 (Medium)
Publicly Published November 18, 2025
Last Updated November 19, 2025
Researcher Adrian Lukita

Description

The Icegram Express - Email Subscribers, Newsletters and Marketing Automation Plugin for WordPress is vulnerable to Authorization in versions up to, and including, 5.9.10. This is due to the plugin not properly verifying that a user is authorized to perform an action in the `trigger_mailing_queue_sending` function. This makes it possible for unauthenticated attackers to force immediate email sending, bypass the schedule, increase server load, and change plugin state (e.g., last-cron-hit), enabling abuse or DoS-like effects.

Learn more about Authentication Bypass 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 5.9.11, or a newer patched version
Affected Version
  • <= 5.9.10
Patched Version
  • 5.9.11

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

# Title CVE ID CVSS Researchers Date
1 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
2 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
3 Email Subscribers & Newsletters <= 5.9.10 - Missing Authentication to Unauthenticated Action Scheduler Task Execution CVE-2025-12348 5.3 Adrian Lukita December 11, 2025
4 Email Subscribers & Newsletters <= 5.9.10 - Authenticated (Administrator+) PHP Object Injection CVE-2025-66055 6.6 Ananda Dhakal November 8, 2025
5 Email Subscribers & Newsletters <= 5.7.49 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2025-0671 4.4 Dmitrii Ignatyev April 3, 2025
6 Email Subscribers & Newsletters <= 5.7.51 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2024-11924 4.4 Dmitrii Ignatyev March 27, 2025
7 Email Subscribers by Icegram Express – Affordable, Powerful Email Marketing for WordPress & WooCommerce <= 5.7.44 - Authenticated (Admin+) Stored Cross-Site Scripting via Text Block CVE-2024-11636 4.4 Dmitrii Ignatyev December 23, 2024
8 Email Subscribers by Icegram Express – Affordable, Powerful Email Marketing for WordPress & WooCommerce <= 5.7.44 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2024-12566 4.4 Dmitrii Ignatyev December 23, 2024
9 Email Subscribers by Icegram Express – Affordable, Powerful Email Marketing for WordPress & WooCommerce <= 5.7.44 - Authenticated (Admin+) Stored Cross-Site Scripting via Form Settings CVE-2024-12567 4.4 Dmitrii Ignatyev December 23, 2024
10 Email Subscribers by Icegram Express – Affordable, Powerful Email Marketing for WordPress & WooCommerce <= 5.7.44 - Authenticated (Admin+) Stored Cross-Site Scripting via Workflow Settings CVE-2024-12568 4.4 Dmitrii Ignatyev December 23, 2024

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