ExploitPublished 22 Apr 2025

WonderCMS 3.4.2 · Remote Code Execution (RCE)

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Mentioned vulnerabilities

CVE-2023-41425

Severity

Critical

Rated by Threat Radar

Data as of 11 Jun 2025, 21:08 UTC

What to do

AI-suggested

1. Immediate upgrade or patching: Organizations should verify if a patched version of WonderCMS beyond 3.4.2 is available and apply it promptly. 2. Web application firewall (WAF): Deploy and configure a WAF to detect and block malicious requests attempting to exploit module installation or inject scripts. Custom rules can be created to block requests containing suspicious parameters or external URLs in module installation endpoints. 3. Input validation and sanitization: Review and harden input validation on the CMS, especially for module installation and token handling, to prevent injection of malicious payloads. 4. Network segmentation and access controls: Limit external access to the CMS administrative interfaces and restrict outbound HTTP requests from the CMS server to prevent fetching malicious payloads. 5. Monitor logs and network traffic: Implement enhanced monitoring to detect unusual activity such as unexpected ZIP file downloads, installation requests, or execution of web shells. 6. User awareness and training: Educate users about phishing and social engineering risks that could lead to triggering the XSS payload. 7. Incident response readiness: Prepare to isolate and remediate compromised systems quickly, including backups and forensic analysis. 8. Disable or remove unused CMS features that allow remote module installation if feasible.

Description

WonderCMS 3.4.2 - Remote Code Execution (RCE)

Impact

For European organizations using WonderCMS 3.4.2, this vulnerability poses a critical risk. Successful exploitation can lead to complete server compromise, enabling attackers to steal sensitive data, deface websites, deploy malware, or use the server as a pivot point for further network attacks. Given that WonderCMS is often used by small to medium enterprises and individual professionals for website management, the impact can range from data breaches to significant reputational damage. The ability to execute arbitrary commands remotely without authentication means attackers can operate stealthily and persistently. Additionally, compromised servers could be used to launch attacks against other targets, including critical infrastructure or government websites, raising broader security concerns. The lack of patches and the presence of public exploit code increase the urgency for affected organizations to act. The attack vector involving XSS to RCE also suggests that social engineering or phishing could be used to trick users into triggering the exploit, increasing the attack surface.

Indicators of compromise

Exploit source code

Exploit code for WonderCMS 3.4.2 - Remote Code Execution (RCE)PHP · 2,846 characters

# Exploit Title: WonderCMS 3.4.2 - Remote Code Execution (RCE)
# Date: 2025-04-16
# Exploit Author: Milad Karimi (Ex3ptionaL)
# Contact: miladgrayhat@gmail.com
# Zone-H: www.zone-h.org/archive/notifier=Ex3ptionaL
# MiRROR-H: https://mirror-h.org/search/hacker/49626/
# CVE: CVE-2023-41425

import requests
import argparse
from argparse import RawTextHelpFormatter
import os
import subprocess
import zipfile
from termcolor import colored

def main():
    parser = argparse.ArgumentParser(description="…

References

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