Post SMTP güvenlik açıkları

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• CVE-2026-75962Yüksek · 7,26 Ekim 2026

  depolanmış siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 4.0.1 ve öncesi · Oturum açmadan istismar edilebilir

  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.

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• CVE-2026-81278Orta · 5,41 Eylül 2026

  eksik yetki denetimi

  Etkilenen sürümler: Kayıtta belirtilmemiş

  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.

• CVE-2026-48838Yüksek · 7,116 Haziran 2026

  siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 3.6.2 ve öncesi · Oturum açmadan istismar edilebilir

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

• CVE-2026-3090Yüksek · 7,218 Mart 2026

  depolanmış siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 3.8.0 ve öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2026-2559Orta · 5,318 Mart 2026

  eksik yetki denetimi

  Etkilenen sürümler: 3.8.0 ve öncesi

  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.

• CVE-2025-67563Orta · 5,39 Aralık 2025

  eksik yetki denetimi

  Etkilenen sürümler: 3.6.1 ve öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2025-12887Orta · 5,43 Aralık 2025

  eksik yetki denetimi

  Etkilenen sürümler: 3.6.1 ve öncesi

  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.

• CVE-2025-11833Kritik · 9,81 Kasım 2025

  eksik yetki denetimi

  Etkilenen sürümler: 3.6.0 ve öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2025-9219Orta · 4,33 Eylül 2025

  eksik yetki denetimi

  Etkilenen sürümler: 3.4.1 ve öncesi

  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.

• CVE-2025-24000Yüksek · 8,87 Ağustos 2025

  kimlik doğrulama atlatma

  Etkilenen sürümler: 3.2.0 ve öncesi

  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.

• CVE-2024-13844Orta · 4,98 Mart 2025

  SQL enjeksiyonu

  Etkilenen sürümler: 3.1.2 ve öncesi

  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.

• CVE-2025-0521Orta · 6,118 Şubat 2025

  depolanmış siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 3.0.2 ve öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2025-22800Yüksek · 8,813 Ocak 2025

  eksik yetki denetimi

  Etkilenen sürümler: 2.9.11 ve öncesi

  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.

• CVE-2024-52436Yüksek · 7,218 Kasım 2024

  SQL enjeksiyonu

  Etkilenen sürümler: 2.9.9 ve öncesi

  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.

• CVE-2024-5207Yüksek · 7,230 Mayıs 2024

  SQL enjeksiyonu

  Etkilenen sürümler: 2.9.3 ve öncesi

  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.

• CVE-2024-29128Orta · 6,119 Mart 2024

  yansıtılan siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 2.8.6 ve öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2023-6875Kritik · 9,811 Ocak 2024

  yetkisiz nesne erişimi (IDOR)

  Etkilenen sürümler: 2.8.7 ve öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2023-6621Orta · 6,13 Ocak 2024

  yansıtılan siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 2.8.7 öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2023-7027Orta · 5,43 Ocak 2024

  depolanmış siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 2.8.7 ve öncesi

  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.

• CVE-2023-6629Orta · 6,13 Ocak 2024

  yansıtılan siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 2.8.6 ve öncesi · Oturum açmadan istismar edilebilir

  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.

• CVE-2023-3082Orta · 6,112 Temmuz 2023

  depolanmış siteler arası betik çalıştırma (XSS)

  Etkilenen sürümler: 2.5.7 ve öncesi · Oturum açmadan istismar edilebilir

  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.