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Type a plugin or theme and the version you run, and we’ll show every known vulnerability that affects it, from the 253,029 records in our vulnerability database. The version is listed under Plugins in your WordPress dashboard.
Plugin · post-smtp
Post SMTP
29 known vulnerabilities on record. Add your version above to see which ones affect you.
Oct 6, 2026Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App: Stored Cross-Site ScriptingCVE-2026-75962 · affects up to 4.0.1 · reported by WordfenceHigh 7.2
The Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'user_email' parameter in all versions up to, and including, 4.0.1 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. This is exploitable without authentication on WordPress Multisite installations with public registration enabled, as WordPress accepts email addresses containing numeric HTML character references that Post SMTP's stricter validator rejects, persisting the attacker-controlled address verbatim to the email log via the failed-send exception message.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Aug 31, 2026Post SMTP: Missing AuthorizationCVE-2026-81278 · reported by PatchstackMedium 5.4
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.
Jun 15, 2026Unauthenticated Cross Site Scripting (XSS) in Post SMTP <= 3.6.2 versions.CVE-2026-48838 · affects up to 3.6.2 · reported by PatchstackHigh 7.1
Unauthenticated Cross Site Scripting (XSS) in Post SMTP <= 3.6.2 versions.
Mar 18, 2026Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App: Stored Cross-Site ScriptingCVE-2026-3090 · affects up to 3.8.0 · reported by WordfenceHigh 7.2
The Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘event_type’ parameter in all versions up to, and including, 3.8.0 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. The vulnerability is only exploitable when the Post SMTP Pro plugin is also installed and its Reporting and Tracking extension is enabled.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Mar 18, 2026Post SMTP: Unauthorized modification of dataCVE-2026-2559 · affects up to 3.8.0 · reported by WordfenceMedium 5.3
The Post SMTP plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `handle_office365_oauth_redirect()` function in all versions up to, and including, 3.8.0. This is due to the function being hooked to `admin_init` without any `current_user_can()` check or nonce verification. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite the site's Office 365 OAuth mail configuration (access token, refresh token, and user email) via a crafted URL. The configuration option is used during wizard setup of Microsoft365 SMTP, only available in the Pro option of the plugin. This could cause an Administrator to believe an attacker-controlled Azure app is their own, and lead them to connect the plugin to the attacker's account during configuration after upgrading to Pro.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Dec 9, 2025Post SMTP: Missing AuthorizationCVE-2025-67563 · affects up to 3.6.1 · reported by PatchstackMedium 5.3
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 <= 3.6.1.
Dec 3, 2025Post SMTP: Authorization bypassCVE-2025-12887 · affects up to 3.6.1 · reported by WordfenceMedium 5.4
The Post SMTP plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.6.1. This is due to the plugin not properly verifying that a user is authorized to update OAuth tokens on the 'handle_gmail_oauth_redirect' function. This makes it possible for authenticated attackers, with subscriber level access and above, to inject invalid or attacker-controlled OAuth credentials. CVE-2025-67563 appears to be a duplicate of this issue.
Nov 1, 2025Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App: Unauthorized access of dataCVE-2025-11833 · affects up to 3.6.0 · reported by WordfenceCritical 9.8
The Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the __construct function in all versions up to, and including, 3.6.0. This makes it possible for unauthenticated attackers to read arbitrary logged emails sent through the Post SMTP plugin, including password reset emails containing password reset links, which can lead to account takeover.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Sep 3, 2025The Post SMTP – WP SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more plugin forCVE-2025-9219 · affects up to 3.4.1 · reported by WordfenceMedium 4.3
The Post SMTP – WP SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'update_post_smtp_pro_option_callback' function in all versions up to, and including, 3.4.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to enable pro extensions.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Aug 7, 2025Post SMTP: Authentication Bypass Using an Alternate Path or ChannelCVE-2025-24000 · affects up to 3.2.0 · reported by PatchstackHigh 8.8
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.
Mar 8, 2025Post SMTP: Generic SQL InjectionCVE-2024-13844 · affects up to 3.1.2 · reported by WordfenceMedium 4.9
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.
Feb 18, 2025Post SMTP: Stored Cross-Site ScriptingCVE-2025-0521 · affects up to 3.0.2 · reported by WordfenceHigh 7.2
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.
Jan 13, 2025Post SMTP: Missing AuthorizationCVE-2025-22800 · affects up to 2.9.11 · reported by PatchstackMedium 4.3
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.
Nov 18, 2024Post SMTP: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')CVE-2024-52436 · affects up to 2.9.9 · reported by PatchstackHigh 7.6
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.
Jun 11, 2024Post SMTP Mailer/Email Log: Missing AuthorizationCVE-2023-52233 · affects up to 2.8.6 · reported by PatchstackHigh 8.6
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.
May 30, 2024POST SMTP – The #1 WordPress SMTP Plugin with Advanced Email Logging and Delivery Failure Notifications: Time-based SQL InjectionCVE-2024-5207 · affects up to 2.9.3 · reported by WordfenceHigh 7.2
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.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Mar 19, 2024POST SMTP: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2024-29128 · affects up to 2.8.6 · reported by PatchstackHigh 7.1
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.
Jan 16, 2024POST SMTP Mailer: Does not have proper CSRF checks in some AJAX actionsCVE-2023-3178 · fixed in 2.5.7 · reported by WPScanMedium 4.3
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.
Jan 15, 2024POST SMTP Mailer: Does not properly sanitise and escape several parameters before using them in SQL statementsCVE-2023-6620 · fixed in 2.8.7 · reported by WPScanHigh 7.2
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.
Jan 11, 2024POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for: Unauthorized access of data and modification of dataCVE-2023-6875 · affects up to 2.8.7 · reported by WordfenceCritical 9.8
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.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Jan 3, 2024POST SMTP: Does not sanitise and escape the msg parameter before outputting it back in the pageCVE-2023-6621 · fixed in 2.8.7 · reported by WPScanMedium 6.1
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.
Jan 3, 2024POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for: Stored Cross-Site ScriptingCVE-2023-7027 · affects up to 2.8.7 · reported by WordfenceHigh 7.2
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.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Jan 3, 2024POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for: Reflected Cross-Site ScriptingCVE-2023-6629 · affects up to 2.8.6 · reported by WordfenceMedium 6.1
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.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Nov 27, 2023POST SMTP Mailer: Does not escape email message content before displaying it in the backendCVE-2023-5958 · fixed in 2.7.1 · reported by WPScanMedium 6.1
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.
Jul 17, 2023POST SMTP Mailer: Does not have proper CSRF checks in some AJAX actionsCVE-2023-3179 · fixed in 2.5.7 · reported by WPScanHigh 8.8
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).
Jul 12, 2023POST SMTP Mailer: Cross-Site Request ForgeryCVE-2021-4422 · affects up to 2.0.20 · reported by WordfenceMedium 4.3
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.
Jul 12, 2023Post SMTP: Stored Cross-Site ScriptingCVE-2023-3082 · affects up to 2.5.7 · reported by WordfenceHigh 7.2
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.
Sep 26, 2022Post SMTP Mailer/Email Log: Does not have proper authorisation in some AJAX actionsCVE-2022-2352 · fixed in 2.1.7 · reported by WPScanHigh 7.2
The Post SMTP Mailer/Email Log WordPress plugin before 2.1.7 does not have proper authorisation in some AJAX actions, which could allow high privilege users such as admin to perform blind SSRF on multisite installations for example.
Sep 16, 2022Post SMTP Mailer/Email Log: Does not escape some of its settings before outputting them in the admins dashboardCVE-2022-2351 · fixed in 2.1.4 · reported by WPScanMedium 4.8
The Post SMTP Mailer/Email Log WordPress plugin before 2.1.4 does not escape some of its settings before outputting them in the admins dashboard, allowing high privilege users to perform Cross-Site Scripting attacks against other users even when the unfiltered_html capability is disallowed.
Versions are matched against the affected ranges published with each record. A plugin can ship a fix under its own numbering, so if something looks off, check the linked record. Want the whole site checked at once? Run the free website check.
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