Subscribe2 <= 10.40 - Cross-Site Request Forgery

4.3
Cross-Site Request Forgery (CSRF)
CVE CVE-2023-3407
CVSS 4.3 (Medium)
Publicly Published June 26, 2023
Last Updated January 22, 2024
Researcher Marco Wotschka - Wordfence

Description

The Subscribe2 plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 10.40. This is due to missing or incorrect nonce validation when sending test emails. This makes it possible for unauthenticated attackers to send test emails with custom content to users on sites running a vulnerable version of this plugin via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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Vulnerability Details for Subscribe2 – Form, Email Subscribers & Newsletters

Software Type Plugin
Software Slug subscribe2 (view on wordpress.org)
Patched? Yes
Remediation Update to version 10.41, or a newer patched version
Affected Version
  • <= 10.40
Patched Version
  • 10.41

Recent vulnerabilities in Subscribe2 – Form, Email Subscribers & Newsletters

# Title CVE ID CVSS Researchers Date
1 Subscribe2 <= 10.45 - Reflected Cross-Site Scripting CVE-2026-14331 6.1 Omar Elshopky August 3, 2026
2 Subscribe2 <= 10.44 - Missing Authorization CVE-2026-24944 5.3 blue0x1 February 3, 2026
3 Subscribe2 – Form, Email Subscribers & Newsletters <= 10.43 - Unauthenticated Stored Cross-Site Scripting via IP Parameter CVE-2024-11582 7.2 mikemyers February 18, 2025
4 Appsero <= 2.0.0 - Missing Authorization via handle_optin_optout CVE-2024-32110 4.3 Dhabaleshwar Das April 11, 2024
5 Subscribe2 <= 10.40 - Missing Authorization CVE-2023-1844 4.3 Marco Wotschka June 26, 2023
6 Subscribe2 <= 10.37 - Cross-Site Request Forgery CVE-2022-4309 7.1 WPScanTeam December 22, 2022
7 Appsero <= 1.2.1 - Missing Authorization 4.3 December 16, 2022
8 Appsero <= 1.2.0 - Cross-Site Request Forgery CVE-2022-47150 4.3 István Márton December 14, 2022
9 Subscribe2 – Form, Email Subscribers & Newsletters <= 10.15 - Stored Cross-Site Scripting CVE-2014-6604 6.1 Matt Barry October 1, 2014
10 Subscribe2 – Form, Email Subscribers & Newsletters < 8.1 - Multiple Cross-Site Scripting 7.1 Heine Pedersen, Torben Jensen August 1, 2014

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