CVE-2026-57410 in MailerPress Plugin
Summary
by MITRE • 07/13/2026
Incorrect Privilege Assignment vulnerability in MailerPress Team MailerPress mailerpress allows Privilege Escalation.This issue affects MailerPress: from n/a through <= 2.0.2.
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Analysis
by VulDB Data Team • 07/13/2026
The incorrect privilege assignment vulnerability in MailerPress represents a critical access control flaw that enables unauthorized privilege escalation within the WordPress plugin ecosystem. This vulnerability exists in versions of MailerPress up to and including version 2.0.2, where the application fails to properly validate user permissions during privilege assignment operations. The flaw allows authenticated users with lower privileges to potentially elevate their access level to administrator status or gain access to restricted functionality that should only be available to privileged users.
The technical implementation of this vulnerability stems from insufficient input validation and improper privilege checking mechanisms within the plugin's core codebase. When users interact with certain administrative functions or API endpoints, the system does not adequately verify whether the requesting user possesses the necessary permissions to perform the requested action. This weakness creates a pathway for malicious actors to exploit the privilege assignment logic and gain unauthorized access to sensitive administrative features.
From an operational perspective, this vulnerability poses significant risk to WordPress installations using affected versions of MailerPress. Attackers could leverage this flaw to completely compromise the mailer plugin functionality and potentially gain full control over the WordPress site. The impact extends beyond simple privilege escalation as it may enable attackers to modify email templates, access subscriber lists, manipulate campaign data, or even install malicious code through the compromised administrative access. This vulnerability aligns with CWE-276 which specifically addresses incorrect privilege assignment in software systems.
The attack surface for this vulnerability is particularly concerning given that MailerPress is a widely used email marketing plugin for WordPress platforms. The flaw can be exploited by any authenticated user who has access to the site, making it a persistent threat that could be leveraged by both internal and external attackers. Security practitioners should note that this vulnerability demonstrates poor adherence to principle of least privilege principles and proper access control implementation as outlined in various cybersecurity frameworks.
Organizations using affected versions of MailerPress should immediately implement mitigation strategies including updating to the latest available version where the vulnerability has been patched, implementing additional monitoring for suspicious privilege escalation attempts, and reviewing existing user permissions to ensure that unnecessary elevated privileges are not assigned. The remediation process should also include conducting thorough security audits of all WordPress plugins and themes to identify similar access control vulnerabilities. This vulnerability serves as a reminder of the critical importance of proper privilege management and input validation in web applications, particularly those handling sensitive user data and administrative functions.
The ATT&CK framework categorizes this vulnerability under privilege escalation techniques where adversaries leverage application flaws to gain higher-level permissions. The mitigation strategies should include regular security assessments, implementing network segmentation to limit access to administrative functions, and maintaining up-to-date security patches across all WordPress installations. Organizations should also consider implementing automated monitoring solutions that can detect anomalous privilege assignment patterns and alert security teams to potential exploitation attempts.