CVE-2025-67563 MEDIUM

CVE-2025-67563: WordPress Post SMTP plugin <= 3.6.1 - Broken Access Control vulnerability

Vendor Saad Iqbal
Product Post SMTP
Weakness CWE-862 · Missing authorization
Published December 9, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

Post SMTP versions up to 3.6.1 lack proper authorization checks, allowing unauthenticated attackers to modify email settings or configuration. An attacker can send a network request to change how the plugin handles outgoing mail without needing to log in or interact with a site administrator. The vulnerability has low integrity impact and does not affect data confidentiality or site availability.

What an attacker can do

03Attacker Capabilities

Modify Post SMTP email settings or configuration without authentication.

Potential impact on your site

04Site Impact

Email delivery may be redirected or misconfigured, potentially disrupting notifications or allowing mail spoofing.

Conditions required to exploit

05Prerequisites

Network access to the site; no login or user interaction required.

Key dates

06Disclosure timeline

December 9, 2025 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE

CVE-2026-13468 Visualizer <= 4.0.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via /visualizer/v1/action/{chart}/{type}/ REST Endpoint CVE-2026-12557 Ninja Forms - File Uploads <= 3.3.29 - Missing Authorization to Unauthenticated Log Disclosure and Deletion via debug-log/delete-all and debug-log/get-all REST Endpoints CVE-2026-13459 JetFormBuilder <= 3.6.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'context' Parameter CVE-2026-48941 Joomla Extension - getk2.org - Unauthenticated folder delete in K2 extension for Joomla < 2.26 CVE-2026-12113 Appointment Booking Calendar <= 1.4.02 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Disclosure