CVE-2026-65455 in MapSVG Plugin
Summary
by MITRE • 07/23/2026
Administrator Arbitrary File Upload in MapSVG <= 8.14.0 versions.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability identified as administrator arbitrary file upload in MapSVG versions prior to 8.14.0 represents a critical security flaw that allows authenticated administrators to upload malicious files to the server, potentially leading to remote code execution and full system compromise. This vulnerability falls under the CWE-434 category of Unrestricted Upload of File with Dangerous Type, which is classified as a high-severity issue in the Common Weakness Enumeration framework. The flaw exists due to insufficient input validation and sanitization of file uploads within the mapsvg plugin, specifically in the admin panel functionality where users can upload custom map data files.
The technical implementation of this vulnerability stems from the plugin's failure to properly validate file extensions, MIME types, and content signatures before processing uploaded files. Attackers with administrator credentials can exploit this weakness by uploading malicious PHP files or other executable content that gets processed by the web server. The vulnerability is particularly dangerous because it requires only administrative access, which is often more difficult to obtain than regular user access, making it a significant concern for WordPress installations where the MapSVG plugin is deployed. The affected versions include all releases up to and including 8.14.0, indicating that this flaw was present in multiple iterations of the software.
The operational impact of this vulnerability extends beyond simple file upload capabilities, as it can enable attackers to establish persistent backdoors, exfiltrate sensitive data, or use the compromised system as a launchpad for further attacks within the network. When combined with other vulnerabilities or through social engineering techniques that might grant administrative access, this flaw can lead to complete system compromise and potential data breaches. The attack surface is particularly concerning in enterprise environments where WordPress installations often serve as critical infrastructure components, and the presence of such vulnerabilities can expose organizations to regulatory compliance violations and significant financial losses.
Mitigation strategies should focus on immediate patching of the MapSVG plugin to version 8.14.1 or later, which contains the necessary security fixes for this vulnerability. Organizations should also implement additional defensive measures including restricting file upload capabilities to only trusted users, implementing strict file type validation with allowlists rather than denylists, and configuring proper file permissions to prevent execution of uploaded content in web-accessible directories. Network segmentation and monitoring solutions can help detect unusual file upload activities that might indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter: PowerShell and T1566.002 for Phishing: Spearphishing Attachment, as attackers may use this vulnerability to establish persistence through uploaded malicious files. Regular security audits and automated vulnerability scanning should be implemented to identify similar issues in other WordPress plugins and themes that might present similar attack vectors.