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OpenAdvisories
High · 7.2 CVE-2023-3087 EUVD-2023-43775GHSA-vp8h-vvmf-j596

FluentSMTP <= 2.2.4 - Unauthenticated Stored Cross-Site Scripting via Email Subject

Published Jul 12, 2023 · Updated Apr 8, 2026 · Assigned by Wordfence

Vendor: techjewel Product: FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider Category: Web / CMS

Description

The FluentSMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an email subject in versions up to, and including, 2.2.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

VendorProductAffectedFixed
techjewel FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider ≤ 2.2.4 —

References