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CVE-2023-3087

MEDIUM 6.1 CVSS 3.1
Published
July 12, 2023
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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 WordPress components

  • FluentSMTP – WP Mail SMTP Plugin with Amazon SES, SendGrid, Mailgun, Postmark, Cloudflare, toSend, Gmail and Any SMTP Plugin · fluent-smtp
    Confirmed match Active
    Up to and including 2.2.4
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • techjewel FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider — Up to and including 2.2.4
  • wpmanageninja fluentsmtp — Before 2.2.5

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/2935217/fluent-smtp/trunk/app/Models/Logger.php Patch
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/2935217/fluent-smtp/trunk/app/Services/Mailer/BaseHandler.php Patch
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/fa47a794-e5ce-491d-a10b-c7c5718aa853?source=cve Third Party Advisory
  • nvd.nist.gov Official NVD record