CVE-2026-14222 in Easy Appointments Plugin
Summary
by MITRE • 07/30/2026
The Easy Appointments WordPress plugin through 3.12.26 does not perform any capability or nonce check in one of its connection-deletion actions, allowing users with contributor-level access to delete the booking configuration and disable the booking system.
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Analysis
by VulDB Data Team • 07/30/2026
The vulnerability identified in the Easy Appointments WordPress plugin version 3.12.26 represents a critical authorization flaw that undermines the security model of the web application. This issue stems from the absence of proper capability checks and nonce validation within one of the plugin's connection-deletion actions, creating an exploitable path for authenticated users with minimal privileges. The flaw allows contributors to execute administrative functions that should be restricted to users with higher privilege levels, fundamentally compromising the principle of least privilege that governs secure application design.
The technical implementation of this vulnerability involves a specific function within the plugin's codebase that handles connection deletion operations without verifying whether the requesting user possesses sufficient capabilities or presenting proper cryptographic tokens for validation. This missing security mechanism creates an access control bypass where a user with contributor-level permissions can manipulate the booking configuration and effectively disable the entire booking system. The lack of nonce verification further compounds the issue by eliminating protection against cross-site request forgery attacks, making exploitation more straightforward for attackers who may have gained access to a low-privilege account.
From an operational perspective, this vulnerability poses significant risks to organizations relying on the Easy Appointments plugin for business operations. A malicious contributor could disrupt service availability by deleting booking configurations, potentially causing financial losses and damaging customer relationships. The impact extends beyond simple disruption as it represents a complete bypass of the plugin's intended access controls, suggesting that other administrative functions within the same code path might also be vulnerable to similar attacks. This weakness could enable attackers to escalate their privileges further or cause denial of service conditions that affect business continuity.
Security professionals should address this vulnerability through immediate patching of the affected plugin version and implementation of proper capability checks and nonce validation mechanisms. Organizations must ensure that all user actions within WordPress plugins are properly authenticated using WordPress's built-in capability systems and nonce verification processes. The fix should involve implementing wp_verify_nonce() checks and verifying user capabilities using functions like current_user_can() to confirm that only authorized personnel can perform administrative operations. This vulnerability aligns with CWE-863, Access Control Bypass Due to Incorrect Authorization, and maps to ATT&CK technique T1078 004 Valid Accounts to exploit the contributor-level access for privilege escalation.
The broader implications of this flaw highlight the importance of secure coding practices within WordPress plugin development, particularly around authentication and authorization mechanisms. Developers must implement robust security controls that validate user privileges and prevent unauthorized access to administrative functions regardless of the user's role level. Organizations should conduct regular security assessments of their WordPress installations and plugins to identify similar authorization flaws that could compromise system integrity. The vulnerability serves as a reminder that even seemingly minor functions within web applications can represent significant security risks when proper access controls are not implemented, emphasizing the need for comprehensive security testing throughout the software development lifecycle.
This particular vulnerability also demonstrates how contributor-level accounts, while typically considered low-risk, can become dangerous attack vectors when plugins fail to implement proper security measures. The ease with which this exploit can be leveraged makes it particularly concerning for organizations that rely heavily on WordPress for their business operations and may not have adequate monitoring in place to detect unauthorized configuration changes. Security teams should implement logging mechanisms that track administrative actions within the plugin and establish alerts for any suspicious activity involving booking system modifications.