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CVE-2026-81278

WordPress Post SMTP plugin 4.0.0-beta.1 - Settings Change vulnerability

Missing Authorization vulnerability in WPExperts Post SMTP allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Post SMTP: from 4.0.0 through beta.1.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Vendors
Wordpress Wpexperts
Products
Wordpress Post Smtp
CVE-2026-48838

WordPress Post SMTP plugin <= 3.6.2 - Cross Site Scripting (XSS) vulnerability

Unauthenticated Cross Site Scripting (XSS) in Post SMTP <= 3.6.2 versions.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Wordpress Wpexperts
Products
Wordpress Post Smtp
CVE-2024-29128

WordPress POST SMTP Mailer plugin <= 2.8.6 - Reflected Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Post SMTP POST SMTP allows Reflected XSS.This issue affects POST SMTP: from n/a through 2.8.6.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2025-24000

WordPress Post SMTP plugin <= 3.2.0 - Account Takeover Vulnerability

Authentication Bypass Using an Alternate Path or Channel vulnerability in Saad Iqbal Post SMTP post-smtp allows Authentication Bypass.This issue affects Post SMTP: from n/a through <= 3.2.0.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Wordpress Wpexperts
Products
Wordpress Post Smtp
CVE-2025-22800

WordPress Post SMTP plugin <= 2.9.11 - Broken Access Control vulnerability

Missing Authorization vulnerability in Saad Iqbal Post SMTP post-smtp allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Post SMTP: from n/a through <= 2.9.11.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2024-52436

WordPress Post SMTP plugin <= 2.9.9 - SQL Injection vulnerability

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Saad Iqbal Post SMTP post-smtp allows Blind SQL Injection.This issue affects Post SMTP: from n/a through <= 2.9.9.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2025-0521

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

The Post SMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the from and subject parameter in all versions up to, and including, 3.0.2 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.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-6875

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

The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to unauthorized access of data and modification of data due to a type juggling issue on the connect-app REST endpoint in all versions up to, and including, 2.8.7. This makes it possible for unauthenticated attackers to reset the API key used to authenticate to the mailer and view logs, including password reset emails, allowing site takeover. CVE-2023-52233 appears to be a duplicate of this issue.

CVSS 3.1 · 9.8 Critical EPSS 90.3% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2021-4422

POST SMTP Mailer <= 2.0.20 - Cross-Site Request Forgery Bypass

The POST SMTP Mailer plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.0.20. This is due to missing or incorrect nonce validation on the handleCsvExport() function. This makes it possible for unauthenticated attackers to trigger a CSV export via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
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.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-6629

POST SMTP Mailer <= 2.8.6 - Reflected Cross-Site Scripting via msg

The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘msg’ parameter in all versions up to, and including, 2.8.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. CVE-2023-6621 appears to be a duplicate of this issue. CVE-2024-29128 appears to be a duplicate of this issue.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-3082

Post SMTP <= 2.5.7 - Unauthenticated Stored Cross-Site Scripting via Email

The Post SMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email contents in versions up to, and including, 2.5.7 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.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2024-5207

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

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.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2024-13844

Post SMTP <= 3.1.2 - Authenticated (Administrator+) SQL Injection via columns Parameter

The Post SMTP plugin for WordPress is vulnerable to generic SQL Injection via the ‘columns’ parameter in all versions up to, and including, 3.1.2 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-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-6620

Post SMTP < 2.8.7 - Admin+ SQL Injection

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.

CVSS 3.1 · 7.2 High EPSS 14.1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-6621

Post SMTP < 2.8.7 - Reflected Cross-Site Scripting

The POST SMTP WordPress plugin before 2.8.7 does not sanitise and escape the msg parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-52233

WordPress POST SMTP Mailer plugin <= 2.8.6 - Broken Access Control on API vulnerability

Missing Authorization vulnerability in Post SMTP Post SMTP Mailer/Email Log.This issue affects Post SMTP Mailer/Email Log: from n/a through 2.8.6.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-3179

POST SMTP Mailer < 2.5.7 - Account Takeover via CSRF

The POST SMTP Mailer WordPress plugin before 2.5.7 does not have proper CSRF checks in some AJAX actions, which could allow attackers to make logged in users with the manage_postman_smtp capability resend an email to an arbitrary address (for example a password reset email could be resent to an attacker controlled email, and allow them to take over an account).

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-5958

POST SMTP Mailer < 2.7.1 - Unauthenticated Cross-site Scripting

The POST SMTP Mailer WordPress plugin before 2.7.1 does not escape email message content before displaying it in the backend, allowing an unauthenticated attacker to perform XSS attacks against highly privileged users.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp
CVE-2023-3178

POST SMTP Mailer < 2.5.7 - Arbitrary Log Deletion via CSRF

The POST SMTP Mailer WordPress plugin before 2.5.7 does not have proper CSRF checks in some AJAX actions, which could allow attackers to make logged in users with the manage_postman_smtp capability delete arbitrary logs via a CSRF attack.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Wpexperts
Products
Post Smtp