CVE-2025-26182
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on systems running xxyopen novel plus version 4.4.0 and earlier. The flaw exists in the PageController.java file, enabling code injection attacks. All users of affected versions are at risk.
💻 Affected Systems
- xxyopen novel plus
📦 What is this software?
Novel Plus by Xxyopen
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the server, allowing data theft, malware deployment, and lateral movement within the network.
Likely Case
Remote code execution leading to web shell installation, data exfiltration, and potential ransomware deployment.
If Mitigated
Limited impact with proper network segmentation and application firewalls blocking malicious payloads.
🎯 Exploit Status
The GitHub gist contains technical details that could be weaponized. CWE-94 indicates code injection vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check for vendor updates
2. If patch available, apply immediately
3. Restart application services
4. Verify fix implementation
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation to block malicious payloads in PageController parameters
Implement Java servlet filter to sanitize all input parameters
Network Segmentation
allIsolate vulnerable systems from internet and critical internal networks
Configure firewall rules to restrict access to vulnerable application
🧯 If You Can't Patch
- Implement web application firewall with RCE protection rules
- Disable or restrict access to vulnerable endpoints in PageController
🔍 How to Verify
Check if Vulnerable:
Check application version and verify presence of vulnerable PageController.java fileCheck Version:
Check application configuration files or admin interface for version informationVerify Fix Applied:
Test for code injection attempts and verify input validation is working📡 Detection & Monitoring
Log Indicators:
- Unusual Java process execution
- Suspicious POST requests to PageController endpoints
- Error logs containing code injection attempts
Network Indicators:
- HTTP requests with encoded payloads to vulnerable endpoints
- Outbound connections from application server to unknown IPs
SIEM Query:
source="application.log" AND ("PageController" AND ("exec" OR "Runtime.getRuntime" OR "ProcessBuilder"))