CVE-2025-46000: Filemanager Vulnerable to Arbitrary File Upload, Enabling Code Execution

🔍 TL;DR Summary

A critical vulnerability, CVE-2025-46000, has been identified in Filemanager version 2.5.0. This flaw allows an unauthenticated attacker to upload arbitrary files, specifically crafted SVG files, which can then be exploited to execute malicious code on the server. This poses a significant risk to systems using the affected Filemanager version.

🚨 Vulnerability Details

CVE ID: CVE-2025-46000
Description: The component /rsc/filemanager.rsc.class.php in Filemanager commit c75b914 v.2.5.0 is susceptible to arbitrary file upload. By uploading a specially crafted SVG file, attackers can execute arbitrary code on the server.
CVSS Score: 6.5 (Medium)
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS Explanation: The vulnerability has a network attack vector, low attack complexity, requires no privileges or user interaction, and does not affect scope. Successful exploitation can lead to limited confidentiality and integrity impact, but no availability impact. This means an attacker can potentially read some sensitive data and modify certain files.
Exploit Requirements: An attacker only needs network access to the Filemanager instance to exploit this vulnerability. No authentication is required.
Affected Vendor: simogeo
Affected Product: Filemanager
Affected Version: 2.5.0 (commit c75b914)
CWE: CWE-94 - Improper Control of Generation of Code ('Code Injection')
CWE Explanation: CWE-94 occurs when an application constructs all or part of a code segment using externally-influenced input. This allows attackers to inject arbitrary code that can be executed by the application. In this case, uploading an SVG file with malicious code can result in the code being executed by the server.

📅 Timeline of Events

2025-07-18: CVE ID assigned and vulnerability reported.

🧠 Exploitability & Real-World Risk

The ease of exploitation significantly increases the risk associated with this vulnerability. An attacker can simply upload a malicious SVG file without needing any prior authentication. This could allow them to gain a foothold on the server, potentially leading to further attacks such as data theft, website defacement, or complete system compromise. Filemanager is often used to manage files on web servers, making this a particularly attractive target for attackers.

🛠️ Recommendations

Upgrade: Upgrade Filemanager to a version that addresses this vulnerability. Check the official Filemanager repository for updates and patches.
Input Validation: Implement strict input validation to prevent the upload of malicious files. Ensure that uploaded files are properly scanned and validated before being stored on the server.
Content Security Policy (CSP): Implement a strict CSP to prevent the execution of arbitrary code from uploaded files.
Web Application Firewall (WAF): Deploy a WAF to detect and block malicious file upload attempts.

🧪 Technical Insight

The vulnerability likely lies in the insufficient validation of uploaded files. Filemanager probably doesn't properly check if an uploaded SVG file contains embedded scripts or other malicious code. This allows an attacker to bypass security checks and inject arbitrary code that is then executed when the SVG file is processed by the server.

🙌 Credit to Researcher(s)

This vulnerability was reported by Zakumini.

🔗 References

🧵 Tags

CVE-2025-46000, Filemanager, Arbitrary File Upload, Code Execution, SVG, PHP, Security Vulnerability

Summary: Filemanager version 2.5.0 contains an arbitrary file upload vulnerability (CVE-2025-46000) allowing unauthenticated attackers to execute arbitrary code by uploading a malicious SVG file.

CVE ID: CVE-2025-46000

Risk Analysis: Successful exploitation allows the attacker to execute arbitrary code on the server, potentially leading to data theft, website defacement, or full system compromise.

Recommendation: Upgrade Filemanager to a patched version, implement strict input validation, and deploy a web application firewall to prevent malicious file uploads.

Timeline

2025-07-18: CVE-2025-46000 Assigned and vulnerability reported.

CVE-2025-46000: Arbitrary File Upload in Filemanager Leads to Potential Code Execution