🔐 CVE Alert

CVE-2024-9511

CRITICAL 9.8

FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider <= 2.2.82 - Unauthenticated PHP Object Injection

CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th

The FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.2.82 via deserialization of untrusted input in the 'formatResult' function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code. The vulnerability was partially patched in version 2.2.82.

CWE CWE-502
Vendor techjewel
Product fluentsmtp – wp smtp plugin with amazon ses, sendgrid, mailgun, postmark, google and any smtp provider
Published Nov 23, 2024
Last Updated Apr 8, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

techjewel / FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider
0 ≤ 2.2.82

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/a3deedc4-b939-4c54-8376-95d3728872d4?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/fluent-smtp/trunk/app/Models/Logger.php#L157 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3194359/ plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3194555/

Credits

Leo Trinh