CVE-2026-85309 in Ultimate Maps Plugin
Summary
by MITRE • 09/03/2026
Missing Authorization vulnerability in Supsystic Ultimate Maps by Supsystic allows Exploiting Incorrectly Configured Access Control Security Levels.
This issue affects Ultimate Maps by Supsystic: from n/a through 1.5.3.
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Analysis
by VulDB Data Team • 09/03/2026
The identified vulnerability represents a critical failure in access control mechanisms within the Supsystic Ultimate Maps plugin, specifically affecting versions ranging from an unspecified initial release up to version 1.5.3. This flaw is categorized under CWE-284, which describes Improper Access Control, and aligns with MITRE ATT&CK technique T1078, Valid Accounts, as it involves the exploitation of incorrectly configured security levels that should restrict user privileges. The core technical issue stems from a missing authorization check within the plugin's codebase, allowing unauthenticated or low-privileged users to perform actions intended only for administrators or higher-level roles. In web application architectures, such vulnerabilities typically arise when API endpoints or administrative functions fail to verify the session state and permission levels of the requesting user before executing sensitive operations.
From a technical perspective, this misconfiguration allows attackers to bypass standard authentication gates by directly invoking internal plugin functions that manage map configurations, settings, or data storage without proper validation. Because Ultimate Maps is designed to handle geographic data and display interactive maps on WordPress sites, it likely exposes endpoints for creating, editing, or deleting map layers and markers. Without adequate authorization checks, an attacker can manipulate these parameters to alter the site's configuration, inject malicious scripts through map descriptions if input sanitization is also weak, or potentially access sensitive location data stored by other users. The absence of a robust session validation step means that any user with basic knowledge of HTTP requests can interact with administrative features as if they were logged in with elevated privileges.
The operational impact of this vulnerability extends beyond simple unauthorized configuration changes. It compromises the integrity and confidentiality of the web application hosting the plugin. Attackers could deface websites by modifying map displays, disrupt services by deleting critical map data, or use the compromised site as a pivot point for further attacks against internal networks if the server is part of a larger infrastructure. Furthermore, since WordPress plugins often have broad database access, this vulnerability could serve as an entry point for SQL injection or cross-site scripting attacks if the input fields associated with these unauthorized actions are not properly sanitized. This significantly increases the attack surface and poses a severe risk to data privacy and site availability.
Mitigation strategies must focus on immediate remediation through software updates and enhanced security configurations. The primary recommendation is to upgrade Supsystic Ultimate Maps to version 1.5.4 or later, where these authorization checks have been implemented by the developer. For organizations unable to update immediately due to compatibility constraints, temporary mitigations include restricting access to the WordPress admin area via IP whitelisting if feasible, and ensuring that all user roles are strictly defined with minimal necessary privileges. Additionally, implementing a Web Application Firewall can help detect and block suspicious requests targeting known vulnerable endpoints associated with this plugin. Regular security audits and penetration testing should be conducted to identify similar misconfigurations in other plugins or custom code within the WordPress environment.