What’s Vulnerable › Vulnerabilities

CVE-2023-6620: Post SMTP < 2.8.7 - Admin+ SQL Injection

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 14.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-01-15 · updated 2026-06-17
• Weakness: CWE-89

Description

The POST SMTP Mailer WordPress plugin before 2.8.7 does not properly sanitise and escape several parameters before using them in SQL statements, leading to a SQL injection exploitable by high privilege users such as admin.

Affected products

• saadiqbal Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App: before 2.8.7 — fixed in 2.8.7

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 2.8.7. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/ab5c42ca-ee7d-4344-bd88-0d727ed3d9c4
• https://wpscan.com/vulnerability/ab5c42ca-ee7d-4344-bd88-0d727ed3d9c4

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