CVE-2025-64234 in Evergreen Content Poster Plugin
Summary
by MITRE • 10/29/2025
Missing Authorization vulnerability in Evergreen Content Poster Evergreen Content Poster evergreen-content-poster allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Evergreen Content Poster: from n/a through <= 1.4.5.
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Analysis
by VulDB Data Team • 01/21/2026
The CVE-2025-64234 vulnerability represents a critical missing authorization flaw within the Evergreen Content Poster plugin, a widely used content management system component that enables users to create and manage ongoing content displays. This security weakness stems from improperly configured access control security levels that fail to adequately validate user permissions before granting access to sensitive administrative functions. The vulnerability exists across all versions of the plugin from the initial release through version 1.4.5, indicating a persistent security gap that has remained unaddressed for an extended period. The affected system operates under the assumption that legitimate users possess appropriate authorization levels, creating a dangerous trust model that can be easily exploited by malicious actors.
The technical implementation of this vulnerability manifests through inadequate input validation and access control checks within the plugin's core functionality. When users attempt to perform administrative actions or access restricted content management features, the system fails to properly verify whether the requesting user possesses the necessary privileges. This misconfiguration allows unauthorized users to bypass normal security protocols and gain access to functionality they should not be permitted to use. The flaw operates at the application level, where the authentication and authorization mechanisms are not properly enforced, creating a pathway for privilege escalation attacks. According to CWE standards, this vulnerability maps to CWE-285, which specifically addresses improper authorization within software applications. The issue demonstrates characteristics of weak access control mechanisms that can be exploited through various attack vectors including social engineering, credential theft, or direct exploitation of the misconfigured security parameters.
The operational impact of this vulnerability extends beyond simple unauthorized access, creating significant risks for organizations relying on the Evergreen Content Poster plugin for their content management needs. Attackers who successfully exploit this flaw can manipulate content, modify administrative settings, and potentially gain full control over the affected system's content management capabilities. The consequences include data integrity compromises, unauthorized content publication, and potential system compromise that could lead to broader network infiltration. Organizations may experience reputational damage from unauthorized content modifications, regulatory compliance violations due to inadequate security controls, and potential financial losses from system downtime or data breaches. The vulnerability also enables persistent threats where attackers can maintain access over extended periods, making detection and remediation more challenging. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as privilege escalation and persistence mechanisms, allowing adversaries to establish long-term access to systems and maintain control over content management functions.
Mitigation strategies for CVE-2025-64234 should prioritize immediate remediation through plugin version updates to the latest secure release that addresses the authorization flaw. System administrators must conduct thorough access control reviews to ensure that proper user role definitions are implemented and enforced throughout the content management environment. Network segmentation and monitoring should be enhanced to detect unauthorized access attempts and anomalous behavior patterns that may indicate exploitation of this vulnerability. Regular security audits and penetration testing should be conducted to identify similar authorization gaps within the broader system architecture. Organizations should also implement automated patch management processes to ensure timely deployment of security updates and maintain comprehensive logging of all administrative activities for forensic analysis. The vulnerability highlights the importance of proper security configuration management and demonstrates how seemingly simple access control misconfigurations can lead to significant security breaches.