What’s Vulnerable › Vulnerabilities

CVE-2024-5207: POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.9.3 - Authenticated (Administrator+) SQL Injection

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-30 · updated 2026-06-17
• Weakness: CWE-89

Description

The POST SMTP – The #1 WordPress SMTP Plugin with Advanced Email Logging and Delivery Failure Notifications plugin for WordPress is vulnerable to time-based SQL Injection via the selected parameter in all versions up to, and including, 2.9.3 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers with administrator access or higher to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Affected products

• saadiqbal Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App: before 2.9.4 — fixed in 2.9.4

How to fix

Upgrade to a fixed version: saadiqbal Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App 2.9.4. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Postman-Email-Log/PostmanEmailQueryLog.php?rev=2974258#L262
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3094453%40post-smtp%2Ftrunk&old=3090744%40post-smtp%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/103db583-9399-4a45-a316-808b55fc6a6c?source=cve
• https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Postman-Email-Log/PostmanEmailQueryLog.php?rev=2974258#L262
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3094453%40post-smtp%2Ftrunk&old=3090744%40post-smtp%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/103db583-9399-4a45-a316-808b55fc6a6c?source=cve

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