FluentSMTP <= 2.2.80 - Cross-Site Request Forgery

4.3
Cross-Site Request Forgery (CSRF)
CVE CVE-2025-24739
CVSS 4.3 (Medium)
Publicly Published January 24, 2025
Last Updated January 28, 2025
Researcher Rafie Muhammad - Awesome Motive, Inc.

Description

The FluentSMTP plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.2.80. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to perform an unauthorized action 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 FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, Mailgun, Postmark, Cloudflare, toSend, Gmail and Any SMTP

Software Type Plugin
Software Slug fluent-smtp (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.2.81, or a newer patched version
Affected Version
  • <= 2.2.80
Patched Version
  • 2.2.81

Recent vulnerabilities in FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, Mailgun, Postmark, Cloudflare, toSend, Gmail and Any SMTP

# Title CVE ID CVSS Researchers Date
1 FluentSMTP <= 2.2.95 - Unauthenticated Stored Cross-Site Scripting via Recipient Display Name (to.name) in Email Logs CVE-2026-16636 7.2 Fraudless August 5, 2026
2 FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider <= 2.2.82 - Unauthenticated PHP Object Injection CVE-2024-9511 9.8 Leo November 22, 2024
3 FluentSMTP <= 2.2.4 - Unauthenticated Stored Cross-Site Scripting via Email Subject CVE-2023-3087 7.2 Alex Thomas July 6, 2023
4 FluentSMTP <= 2.2.2 - Authenticated (Author+) Stored Cross-Site Scripting via Email Logs CVE-2023-0219 3.8 Vaibhav Rajput March 3, 2023
5 FluentSMTP <= 2.0.0 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2021-24528 5.5 YoshiKen July 29, 2021

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