CVE-2026-57646 in Majestic Support Plugin
Summary
by MITRE • 06/26/2026
Subscriber Insecure Direct Object References (IDOR) in Majestic Support <= 1.1.7 versions.
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Analysis
by VulDB Data Team • 06/26/2026
Insecure Direct Object References represent a critical vulnerability class that allows unauthorized access to resources through manipulation of object references such as database keys or file paths. This weakness falls under the Common Weakness Enumeration category CWE-639 and is particularly dangerous in web applications where user access controls are bypassed through direct reference manipulation. The Majestic Support plugin for WordPress versions 1.1.7 and earlier contains this vulnerability that affects subscribers who should not have access to administrative functions.
The technical flaw occurs when the application uses user-supplied input directly to construct object references without proper authorization checks or validation. In Majestic Support, subscriber users can manipulate parameters in the URL or API requests to access support tickets, user data, or other administrative resources that are normally restricted to administrators or agents. This typically manifests when the application retrieves objects based on identifiers provided by the client without verifying whether the requesting user has legitimate access rights to those specific resources.
The operational impact of this vulnerability allows low-privileged users to escalate their privileges and gain unauthorized access to sensitive data. Subscribers can view confidential support tickets, customer information, system configurations, or other data that should remain restricted to authorized personnel only. The vulnerability exists across multiple areas of the application where object references are used without proper access controls, creating a persistent security risk that can be exploited by both malicious insiders and external attackers.
Security mitigations for this issue require implementing robust access control mechanisms throughout the application. All object references must be validated against user permissions before any data is returned or actions executed. The principle of least privilege should be enforced where users can only access resources they are explicitly authorized to view. Additionally, applications should employ indirect object references that map user-accessible identifiers to actual database keys through a secure lookup mechanism. This approach prevents direct manipulation of object identifiers and ensures proper authorization checks occur before any resource access is granted.
The vulnerability demonstrates a clear violation of the defense-in-depth security principle where multiple layers of protection should exist between users and sensitive resources. Organizations should implement comprehensive input validation, access logging, and regular security assessments to identify similar weaknesses in their applications. The ATT&CK framework categorizes this as privilege escalation through insecure direct object references, making it a critical target for both automated scanning tools and manual penetration testing efforts.
Recommendations include immediate patching of the vulnerable Majestic Support plugin to version 1.1.8 or later, implementing proper authorization checks at all API endpoints, and conducting thorough code reviews to identify additional instances of similar vulnerabilities. Regular security training for developers should emphasize the importance of access control implementation and the risks associated with direct object references in web applications. Organizations must also establish monitoring procedures to detect unauthorized access attempts and ensure that any object reference manipulation is logged and analyzed for potential security incidents.
This vulnerability type remains prevalent in many web applications due to the complexity of implementing proper access controls and the tendency to assume that authentication alone provides sufficient protection. The lack of proper authorization checks creates a fundamental security flaw that can undermine even the most secure authentication systems, making it essential for all developers to understand and properly implement access control mechanisms throughout their applications.