CVE-2026-8690 in RentMy Real-Time Rental Management Plugin
Summary
by MITRE • 06/24/2026
The RentMy Real-Time Rental Management Plugin plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.0.4.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to read, create, update, and delete event records stored in the rentmy_events WordPress option, as well as overwrite the rentmy_locationId option.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/24/2026
The RentMy Real-Time Rental Management Plugin for WordPress presents a critical authorization bypass vulnerability that affects all versions up to and including 4.0.4.1, creating a significant security risk for WordPress installations. This vulnerability stems from inadequate user authentication verification mechanisms within the plugin's codebase, specifically failing to properly validate user permissions before executing sensitive operations. The flaw allows unauthenticated attackers to exploit the system's trust model and gain unauthorized access to critical data management functions that should only be available to authenticated administrators or authorized users.
The technical implementation of this vulnerability manifests through improper access control checks within the plugin's event management functionality. Attackers can manipulate the system to perform read, create, update, and delete operations on event records stored in the rentmy_events WordPress option without providing valid authentication credentials. This represents a fundamental failure in the plugin's security architecture where the authorization layer is either completely absent or insufficiently implemented. The vulnerability extends beyond simple data reading capabilities to include full modification privileges over the rentmy_locationId option, which could potentially compromise location-based services and business logic within the rental management system.
The operational impact of this authorization bypass vulnerability is substantial for WordPress administrators and end-users who rely on the RentMy plugin for their rental management operations. Unauthenticated attackers can manipulate event data to disrupt business operations, create false records that may affect pricing or availability calculations, or delete critical information that could lead to revenue loss or customer service disruptions. The ability to overwrite the rentmy_locationId option creates additional risks by potentially altering location-based configurations that might affect how rental properties are displayed or managed within the system. This vulnerability directly violates security principles outlined in the OWASP Top Ten and represents a clear violation of the principle of least privilege, where users should only have access to resources necessary for their specific roles.
Organizations utilizing this plugin face significant risk exposure due to the broad scope of operations that can be performed without authentication. The vulnerability creates opportunities for data integrity compromise and potential business disruption. Security practitioners should immediately consider implementing network-level mitigations such as restricting access to plugin endpoints or employing web application firewalls to monitor and block suspicious activity patterns. The underlying issue points to a lack of proper input validation and authorization checks that aligns with common weakness patterns described in CWE-285, which addresses improper authorization scenarios. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques and can be leveraged for initial access or lateral movement within compromised systems.
Mitigation strategies should include immediate patching to the latest plugin version where the authorization bypass has been resolved, along with comprehensive security audits of all installed WordPress plugins to identify similar vulnerabilities. Network administrators should implement monitoring solutions that track unauthorized attempts to access plugin endpoints and establish incident response procedures for potential exploitation attempts. The vulnerability also highlights the importance of proper security testing during plugin development cycles, particularly focusing on authentication and authorization mechanisms. Organizations should consider implementing additional access controls such as IP whitelisting for administrative endpoints or multi-factor authentication for WordPress admin interfaces to reduce overall attack surface and provide defense-in-depth protection against similar authorization bypass scenarios.