CVE-2025-32682: MapSVG RCE Vulnerability via File Upload

CVE-2025-32682 Overview

CVE-2025-32682 is an Unrestricted Upload of File with Dangerous Type vulnerability affecting the RomanCode MapSVG WordPress plugin (mapsvg-lite-interactive-vector-maps). This vulnerability allows attackers to upload a web shell to a web server, potentially leading to complete server compromise. The flaw stems from insufficient file type validation during upload operations, enabling malicious actors to bypass security controls and deploy arbitrary executable files.

Critical Impact

This vulnerability enables attackers to upload web shells to WordPress servers, granting persistent backdoor access and full remote code execution capabilities on affected systems.

Affected Products

• RomanCode MapSVG (mapsvg-lite-interactive-vector-maps) versions through 8.6.4
• WordPress installations running vulnerable MapSVG Lite plugin versions
• Web servers hosting WordPress with MapSVG functionality enabled

Discovery Timeline

• 2025-04-17 - CVE CVE-2025-32682 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2025-32682

Vulnerability Analysis

This vulnerability is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type), representing a critical flaw in how the MapSVG plugin handles file uploads. The plugin fails to properly validate or restrict the types of files that users can upload through its interface, allowing attackers to submit files with dangerous extensions such as PHP scripts, ASP files, or other server-side executables.

When exploited, an attacker can upload a malicious web shell disguised as a legitimate file or by exploiting missing extension checks. Once the web shell is uploaded and accessible on the server, the attacker gains the ability to execute arbitrary commands, access sensitive data, modify website content, and establish persistent access to the compromised server.

Root Cause

The root cause of this vulnerability lies in inadequate server-side validation of uploaded files within the MapSVG plugin. The plugin does not implement proper checks to ensure that uploaded files match expected and safe file types. This includes missing or bypassable MIME type verification, insufficient extension filtering, and lack of file content inspection. Without these security controls, dangerous file types can be uploaded and stored in web-accessible directories.

Attack Vector

The attack vector involves an authenticated or unauthenticated attacker (depending on plugin configuration) accessing the MapSVG file upload functionality. The attacker crafts a malicious request containing a web shell file—typically a PHP script that provides command execution capabilities. By manipulating file extensions, MIME types, or exploiting race conditions, the attacker bypasses any client-side restrictions.

Once uploaded, the web shell is stored in a publicly accessible directory. The attacker then navigates to the uploaded file's URL, triggering server-side execution of the malicious code. This grants the attacker interactive command-line access to the web server with the privileges of the web server process. For detailed technical information, see the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-32682

Indicators of Compromise

• Unexpected PHP, ASP, or other executable files appearing in WordPress upload directories, particularly within /wp-content/uploads/ or MapSVG-specific directories
• Web server access logs showing requests to unfamiliar script files with suspicious parameter patterns (e.g., cmd=, exec=, shell=)
• New or modified files with recent timestamps in plugin directories that do not correspond to legitimate updates
• Unusual outbound network connections from the web server to unknown IP addresses

Detection Strategies

• Implement file integrity monitoring (FIM) on WordPress directories to detect unauthorized file additions or modifications
• Configure web application firewall (WAF) rules to block requests containing common web shell signatures and command execution patterns
• Regularly scan upload directories for files with executable extensions that should not be present (.php, .phtml, .asp, .aspx, .jsp)
• Monitor web server error logs for unusual PHP errors or execution attempts from upload directories

Monitoring Recommendations

• Enable detailed logging for the MapSVG plugin and WordPress file upload operations
• Set up alerts for file creation events in web-accessible directories, especially those matching executable file patterns
• Deploy endpoint detection and response (EDR) solutions to monitor for post-exploitation activities such as command execution and lateral movement
• Regularly review user activity logs for suspicious upload attempts or administrative actions

How to Mitigate CVE-2025-32682

Immediate Actions Required

• Immediately disable or deactivate the MapSVG plugin until a patched version is available
• Audit existing upload directories for any suspicious or unexpected files, particularly those with executable extensions
• Restrict file upload permissions at the server level to prevent PHP execution in upload directories
• Review and revoke any unnecessary user accounts with upload capabilities

Patch Information

Currently, the vulnerability affects MapSVG versions through 8.6.4. Administrators should monitor the official plugin repository and the Patchstack advisory for patch release announcements. Update to the latest patched version as soon as it becomes available from RomanCode.

Workarounds

• Add .htaccess rules to disable PHP execution in upload directories used by MapSVG
• Implement server-level file type restrictions using web server configuration to block dangerous extensions
• Use a Web Application Firewall (WAF) to filter and block malicious file upload attempts
• Consider using a WordPress security plugin that provides real-time file upload scanning and blocking capabilities

# Apache .htaccess configuration to disable PHP execution in uploads
# Place this file in the MapSVG uploads directory or wp-content/uploads

# Disable PHP execution
<Files "*.php">
    Require all denied
</Files>

<Files "*.phtml">
    Require all denied
</Files>

# For older Apache versions, use:
# <Files "*.php">
#     Order Deny,Allow
#     Deny from all
# </Files>