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

9.8
Missing Authorization
CVE CVE-2025-11833
CVSS 9.8 (Critical)
Publicly Published October 31, 2025
Last Updated November 1, 2025
Researcher netranger

Description

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.

Wordfence blocked 1,543 attacks targeting this vulnerability in the past 24 hours.

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

Software Type Plugin
Software Slug post-smtp (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.6.1, or a newer patched version
Affected Version
  • <= 3.6.0
Patched Version
  • 3.6.1

Recent vulnerabilities in Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App

# Title CVE ID CVSS Researchers Date
1 Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App <= 3.6.2 - Unauthenticated Stored Cross-Site Scripting CVE-2026-48838 7.2 Drew Webber (mcdruid) May 28, 2026
2 Freemius <= 2.10.1 - Reflected DOM-Based Cross-Site Scripting via url Parameter CVE-2024-13362 6.1 Asaf Mozes April 30, 2026
3 Post SMTP <= 3.8.0 - Unauthenticated Stored Cross-Site Scripting via 'event_type' CVE-2026-3090 7.2 h0xilo March 17, 2026
4 Post SMTP <= 3.8.0 - Missing Authorization to Authenticated (Subscriber+) Office 365 OAuth Configuration Overwrite CVE-2026-2559 5.3 Michael Iden (Mickhat) March 17, 2026
5 Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App <= 3.6.1 - Missing Authorization to Authenticated (Subscriber+) OAuth Token Update CVE-2025-12887 5.4 type5afe December 3, 2025
6 Post SMTP <= 3.4.1 - Missing Authorization to Authenticated (Subscriber+) Limited Plugin Option Update CVE-2025-9219 4.3 Matteo Leonelli, David D. September 2, 2025
7 Post SMTP <= 3.2.0 - Missing Authorization to Authenticated (Subscriber+) Account Takeover via Email Log Exposure CVE-2025-24000 8.8 Denver Jackson July 21, 2025
8 Post SMTP <= 3.1.2 - Authenticated (Administrator+) SQL Injection via columns Parameter CVE-2024-13844 4.9 Nhien Pham (nhienit) March 7, 2025
9 Post SMTP <= 3.0.2 - Unauthenticated Stored Cross-Site Scripting CVE-2025-0521 7.2 zer0gh0st February 17, 2025
10 Post SMTP <= 2.9.11 - Missing Authorization via regenerate_qrcode() CVE-2025-22800 4.3 Rafie Muhammad January 7, 2025

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