CVE-2026-112218 in Majestic Support Plugin
Summary
by MITRE • 10/22/2026
Missing Authorization vulnerability in Ahmad Majestic Support majestic-support allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Majestic Support: from n/a through 1.2.1.
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Analysis
by VulDB Data Team • 10/22/2026
The identified security flaw represents a critical failure in access control mechanisms within the Majestic Support application, specifically affecting versions ranging from initial release up to version 1.2.1. This vulnerability is classified as an improper authorization issue where the software fails to enforce adequate restrictions on authenticated users regarding what resources or functions they are permitted to access. In practical terms, this means that while a user may be successfully authenticated into the system, the application does not properly verify whether that specific user has the requisite privileges to perform certain actions or view sensitive data associated with other accounts or administrative levels. This gap in logic allows an attacker who possesses valid credentials for any standard user account to potentially escalate their privileges or access restricted areas of the platform without possessing explicit authorization for those higher-level functions.
From a technical perspective, this vulnerability stems from incorrectly configured security levels that do not adequately distinguish between different roles within the application architecture. The system likely relies on client-side checks or lacks server-side validation when processing requests related to sensitive operations. Consequently, an attacker can manipulate API calls or HTTP parameters to bypass these insufficient controls. By sending crafted requests that target administrative endpoints or functions reserved for higher-privileged users, the malicious actor can execute commands, modify configurations, or retrieve data intended only for administrators. This type of flaw is particularly dangerous because it does not require complex exploitation techniques; rather, it relies on the fundamental absence of proper server-side authorization checks during request processing.
The operational impact of this vulnerability is severe, as it compromises the integrity and confidentiality of the entire support platform. If an attacker successfully exploits this missing authorization check, they could gain unauthorized access to customer data, internal communications, or system configurations that are critical for maintaining service reliability. This breach can lead to significant reputational damage, regulatory non-compliance regarding data protection standards such as GDPR or HIPAA if personal information is exposed, and potential financial losses due to fraud or operational disruption. Furthermore, because the vulnerability allows privilege escalation from a low-privileged user account, it serves as an effective entry point for further attacks within the internal network infrastructure surrounding the Majestic Support deployment.
This issue aligns with Common Weakness Enumeration identifier CWE-269, which describes Improper Privilege Assignment, and is closely related to CWE-862, Missing Authorization. In terms of offensive security frameworks, this vulnerability facilitates techniques categorized under MITRE ATT&CK Tactic TA0001 Initial Access or TA0004 Impact, specifically enabling attackers to escalate privileges from a standard user account to an administrative role without valid credentials for that higher level. The exploitation path typically involves identifying authenticated endpoints and testing them with requests intended for privileged roles, confirming the lack of server-side validation before proceeding with further malicious activities.
To mitigate this vulnerability, immediate action is required by upgrading the Majestic Support application to a version later than 1.2.1 where these access control issues have been addressed by the vendor. For organizations unable to upgrade immediately due to operational constraints, implementing compensating controls such as strict web application firewall rules can help detect and block anomalous requests that attempt to access administrative endpoints from standard user sessions. Additionally, conducting a thorough code review focused on authorization logic is essential to ensure that all sensitive operations are validated against the current user's role permissions on the server side before execution. Regular security assessments and penetration testing should also be integrated into the development lifecycle to identify similar flaws in other components of the application stack.