Vulnerability Report
Plugin High Patch path listed CVE-2023-7027

POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.7 - Unauthenticated Stored Cross-Site Scripting via device

The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘device’ header in all versions up to, and including, 2.8.7 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.

Quick Answer

CVE-2023-7027 is a high severity with CVSS 7.2 Stored Cross-Site Scripting issue affecting the Plugin Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App. It affects Versions up to 2.8.7 and is fixed in 2.8.8.

Published
Jan 02, 2024
Last Updated
Jul 29, 2024
Slug
post-smtp
Operational Summary

What the operator needs to know

Patch Status
Patched release is available
Remediation
Update to version 2.8.8, or a newer patched version
Operator Briefing

CVE-2023-7027 is tracked for the Plugin Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App as high severity with CVSS 7.2. The affected range is Versions up to 2.8.7. Update Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App to 2.8.8 or newer where that version is compatible with the site.

Issue Type
Stored Cross-Site Scripting
Primary Fixed Version
2.8.8
Primary Affected Range
Versions up to 2.8.7
Tracking ID
CVE-2023-7027
Detailed Metadata
Software Type Plugin
Software Slug
CVE CVE-2023-7027
Patched Versions
2.8.8
Affected Versions
Versions up to 2.8.7
Related CVE Cluster

Related CVEs for Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App

These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.

Critical CVE-2025-11833 3.6.1 Oct 31, 2025
CVE-2025-11833 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Vulnerability

Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App <= 3.6.0 - Missing Authorization to Account Takeover via Unauthenticated Email Log Disclosure

Critical CVE-2023-6875 2.8.8 Jan 10, 2024
CVE-2023-6875 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Authorization Bypass

POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.7 - Authorization Bypass via type connect-app API

High CVE-2025-24000 3.3.0 Jul 21, 2025
CVE-2025-24000 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Privilege Escalation

Post SMTP <= 3.2.0 - Missing Authorization to Authenticated (Subscriber+) Account Takeover via Email Log Exposure

High CVE-2026-3090 3.9.0 Mar 17, 2026
CVE-2026-3090 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Stored Cross-Site Scripting

Post SMTP <= 3.8.0 - Unauthenticated Stored Cross-Site Scripting via 'event_type'

High CVE-2025-0521 3.1.0 Feb 17, 2025
CVE-2025-0521 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Stored Cross-Site Scripting

Post SMTP <= 3.0.2 - Unauthenticated Stored Cross-Site Scripting

High CVE-2024-5207 2.9.4 May 22, 2024
CVE-2024-5207 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App SQL Injection

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

High CVE-2023-6620 2.8.7 Dec 21, 2023
CVE-2023-6620 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App SQL Injection

POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.6 - Authenticated (Administrator+) SQL Injection

High CVE-2023-5958 2.7.1 Nov 06, 2023
CVE-2023-5958 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Stored Cross-Site Scripting

POST SMTP Mailer <= 2.7.0 - Unauthenticated Stored Cross-Site Scripting

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