Overview
CVE ID: CVE-2025-68562
Affected Product: MapSVG (RomanCode WordPress plugin)
Affected Versions: All versions up to and including 8.7.3
Severity: HIGH
CVSS Score: 7.5
Impact Type: Availability compromise with high risk of remote code execution
Attack Vector: Network-based
Privileges Required: Low to none (depending on site configuration)
User Interaction: None
Exploit Availability: Publicly documented exploitation methods exist
Exploitability: High
This vulnerability allows attackers to upload files containing executable code to the web server through MapSVG’s upload functionality. In practical attacks, this results in web shell deployment, persistent access, and complete site compromise.
Vulnerability Summary
MapSVG includes functionality that allows file uploads for map assets, custom markers, and configuration data. The vulnerability occurs because uploaded files are not strictly validated for dangerous or executable types. The plugin does not consistently enforce server-side checks on file extensions, MIME types, or execution context.
As a result, attackers can upload files that the web server later interprets and executes. In environments where uploaded files are stored in web-accessible directories, this leads directly to arbitrary command execution.
Root Cause
The root cause is improper input validation during the file upload process. Specifically:
- File extension checks are incomplete or insufficient
- MIME type validation can be bypassed
- Uploaded files are written to locations accessible via HTTP
- Server execution of uploaded content is not explicitly blocked
This combination allows attacker-controlled files to transition from simple uploads into executable server payloads.
Exploitation Mechanics
An attacker first identifies an upload endpoint exposed by MapSVG. Depending on site configuration, this endpoint may be reachable by unauthenticated users or by low-privileged accounts.
The attacker submits a crafted file containing server-side executable code while disguising it as a legitimate asset. Because validation is weak, the upload succeeds. The file is stored on the server in a web-accessible directory.
The attacker then sends an HTTP request directly to the uploaded file. If the server processes the file as executable content, the attacker gains remote code execution. From this point onward, the attacker can execute arbitrary commands, establish persistence, and pivot deeper into the environment.
Real-World Attack Scenarios
Public WordPress Site
A public website uses MapSVG to display interactive maps. Upload functionality is exposed to contributors. An attacker uploads a malicious script disguised as a map asset. The file is executed by the server, granting full control over the site.
Shared Hosting Environment
An attacker compromises a single WordPress site using MapSVG on shared hosting. The uploaded web shell allows them to explore neighboring directories, potentially affecting other hosted websites on the same server.
Automated Scanning Campaigns
Attackers run automated scans searching for vulnerable MapSVG installations. Once detected, they mass-upload malicious files and deploy web shells across hundreds of sites, often within minutes.
Impact
Successful exploitation can lead to:
- Complete website takeover
- Persistent web shell access
- Data exfiltration (databases, credentials, user data)
- Website defacement or malware distribution
- Abuse of server resources for spam or botnet activity
- Service disruption and downtime
- Reputational damage and potential legal consequences
While classified as a denial-of-service impact, real-world exploitation frequently escalates into full remote code execution.
Detection and Indicators of Compromise
Network Indicators
- POST requests to MapSVG upload endpoints followed by immediate GET requests to newly uploaded files
- Requests targeting unexpected file extensions within upload directories
- Repeated upload attempts from a single IP or unusual geographic locations
Application and System Indicators
- New or modified files appearing under
wp-content/uploadsor MapSVG directories - Files with double extensions or suspicious naming patterns
- Unexpected PHP execution errors or warnings
- Outbound network connections initiated by the web server process
- Sudden spikes in CPU or memory usage
Example Malicious Payload Characteristics
- Executable file types placed in upload directories
- Small file size with high execution impact
- Code designed to accept commands via URL parameters or POST data
- Files that appear inactive until directly accessed through a browser
These payloads often remain unnoticed until actively invoked.
Detection Rules and Log Sources
Recommended Log Sources
- Web server access logs (Apache, NGINX)
- WordPress audit and authentication logs
- File integrity monitoring logs
- System process and resource usage logs
Detection Logic
- Alert on uploads containing executable extensions
- Monitor for HTTP access to uploaded files shortly after upload
- Track file creation events in web-accessible directories
- Correlate upload activity with subsequent command execution behavior
MITRE ATT&CK Mapping
- Initial Access: Exploit Public-Facing Application (T1190)
- Execution: Command and Scripting Interpreter
- Persistence: Web Shell (T1505.003)
- Impact: Endpoint Denial of Service (T1499)
This attack chain reflects a common pattern where a simple upload flaw leads to full system compromise.
Remediation
Official Patch
MapSVG has released updates that add stricter file-type validation and upload handling controls. All users should upgrade to a version newer than 8.7.3 immediately.
Official Patch Source:
https://mapsvg.com/changelog
Temporary Mitigations
If immediate patching is not possible:
- Disable MapSVG upload features
- Block execution of scripts in upload directories at the web server level
- Restrict upload endpoints to trusted users only
- Implement WAF rules to block dangerous file extensions
- Enable file integrity monitoring for early detection
These measures reduce risk but do not fully eliminate it.
Final Takeaway
CVE-2025-68562 is a serious vulnerability that turns a routine file upload feature into a powerful attack vector. The ease of exploitation and high impact make it especially dangerous for public WordPress sites.
Any installation running MapSVG version 8.7.3 or earlier should be considered at risk. Immediate patching, combined with monitoring for signs of compromise, is essential to prevent abuse and maintain system integrity.
