CVE-2026-61946 in Easy Appointments Plugin
Summary
by MITRE • 07/23/2026
Unauthenticated Insecure Direct Object References (IDOR) in Easy Appointments <= 3.12.27 versions.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability identified as unauthenticated insecure direct object references in Easy Appointments versions prior to 3.12.27 represents a critical security flaw that allows attackers to access sensitive data and functionality without proper authentication. This type of vulnerability falls under the CWE-639 category, which specifically addresses Insecure Direct Object References, where applications fail to verify that users are authorized to access specific resources or objects within the application's data model. The affected version range indicates that numerous installations of this appointment scheduling system were potentially exposed to unauthorized access.
The technical implementation of this vulnerability stems from the application's failure to properly validate object references when processing requests for appointments, customers, or administrative functions. Attackers can manipulate URL parameters or API calls to directly reference objects such as appointment IDs, customer records, or administrative resources without being authenticated to the system. This allows unauthorized users to view, modify, or delete sensitive information that should only be accessible to legitimate administrators or authorized personnel. The flaw exists because the application relies on predictable object identifiers rather than implementing proper access controls and authentication checks before processing direct object references.
The operational impact of this vulnerability extends beyond simple data exposure, as it can lead to complete system compromise and unauthorized administrative access. An attacker exploiting this vulnerability could gain visibility into customer databases containing personal information, appointment details, and potentially sensitive business data. The implications are particularly severe for organizations using Easy Appointments for healthcare, legal, or financial services where patient or client confidentiality is paramount. Additionally, attackers could manipulate scheduling systems to create fraudulent appointments, disrupt service availability, or even delete critical booking records that could cause operational disruption.
Security best practices recommend implementing comprehensive access control mechanisms and proper input validation to prevent such vulnerabilities from occurring in web applications. Organizations should ensure that all object references are validated against user permissions and that authentication checks occur before any direct object access is permitted. The mitigation strategy involves upgrading to version 3.12.27 or later, which includes proper authentication and authorization controls for all object references. Additionally, implementing proper logging and monitoring of access attempts can help detect unauthorized access patterns that may indicate exploitation of this vulnerability. This issue aligns with the ATT&CK technique T1078 which covers legitimate credentials and privilege escalation through unauthorized access to systems, making it a critical concern for organizations seeking to maintain compliance with data protection regulations such as GDPR, HIPAA, or PCI-DSS standards.