CVE-2026-65486 in Event post Plugin
Summary
by MITRE • 07/23/2026
Unauthenticated Broken Access Control in Event post <= 6.0.1 versions.
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Analysis
by VulDB Data Team • 07/23/2026
This vulnerability represents a critical breakdown in access control mechanisms within the Event post plugin for WordPress systems, affecting versions up to and including 6.0.1. The flaw allows unauthenticated attackers to bypass normal authorization checks and gain access to restricted functionality or data that should only be available to authenticated users with proper privileges. This type of vulnerability falls under the category of broken access control as defined by cwe-284, which specifically addresses improper access control implementations in software applications. The issue stems from insufficient validation of user credentials or session tokens when processing requests to sensitive endpoints within the plugin's codebase.
The technical implementation of this vulnerability typically involves the absence of proper authentication checks before executing privileged operations such as creating, modifying, or deleting events within the calendar system. Attackers can exploit this by directly calling the affected plugin endpoints without providing valid login credentials or session information. This allows them to perform actions like publishing unauthorized events, modifying existing event data, or accessing administrative functions that should require elevated privileges. The vulnerability creates a pathway for privilege escalation and data manipulation that can significantly compromise the integrity and availability of the event management system.
The operational impact of this vulnerability extends beyond simple data exposure to encompass potential system compromise and service disruption. An attacker could use this weakness to flood the system with unauthorized events, manipulate existing calendar entries, or potentially gain deeper access to the underlying WordPress installation through the compromised plugin interface. This type of attack vector aligns with tactics described in the mitre att&ck framework under initial access and privilege escalation techniques, where attackers seek to establish footholds within systems by exploiting weak access controls. The vulnerability particularly affects organizations that rely heavily on calendar management and event scheduling features within their wordpress environments.
Organizations should immediately implement security patches provided by the plugin developers to address this access control weakness. Additionally, implementing network-level restrictions such as firewall rules to limit access to sensitive endpoints can serve as a temporary mitigation measure while waiting for official updates. Regular monitoring of system logs for unauthorized access attempts and implementing robust authentication mechanisms including multi-factor authentication can help detect and prevent exploitation attempts. Security teams should also consider conducting comprehensive vulnerability assessments of all installed plugins and themes to identify similar access control issues that may exist within their wordpress environments. The remediation process should include thorough testing of patched versions to ensure that legitimate functionality remains intact while the security vulnerability is properly addressed according to industry best practices for wordpress security maintenance.