CVE-2026-3064
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on HummerRisk systems by injecting malicious input into the regionId parameter of the Cloud Task Scheduler component. The vulnerability affects HummerRisk versions up to 1.5.0 and can be exploited without authentication.
💻 Affected Systems
- HummerRisk
📦 What is this software?
Hummerrisk by Hummerrisk
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands with the privileges of the HummerRisk service, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Attackers gain initial foothold on the server, install backdoors, exfiltrate sensitive data, or use the compromised system as a pivot point for further attacks.
If Mitigated
Limited impact due to network segmentation, minimal service privileges, and proper input validation at other layers.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making this easily weaponizable by attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor was contacted but did not respond. Consider upgrading to any version above 1.5.0 if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation for the regionId parameter to only allow expected characters
# Modify ResourceCreateService.java to validate regionId input
# Example: if (!regionId.matches("^[a-zA-Z0-9-]+$")) { throw new IllegalArgumentException("Invalid regionId"); }
Network Segmentation
linuxRestrict network access to HummerRisk instances
# Firewall rule example for Linux:
iptables -A INPUT -p tcp --dport <hummerrisk-port> -s <trusted-networks> -j ACCEPT
iptables -A INPUT -p tcp --dport <hummerrisk-port> -j DROP
🧯 If You Can't Patch
- Isolate HummerRisk instances in a separate network segment with strict firewall rules
- Implement web application firewall (WAF) rules to block command injection patterns
🔍 How to Verify
Check if Vulnerable:
Check HummerRisk version. If version is 1.5.0 or earlier, the system is vulnerable.Check Version:
# Check HummerRisk version in web interface or configuration files
# Typically found in application.properties or via web UIVerify Fix Applied:
Test the regionId parameter with command injection payloads to verify they are blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in system logs
- Suspicious regionId parameter values containing shell metacharacters
- Unexpected process spawns from HummerRisk service
Network Indicators:
- Outbound connections from HummerRisk server to suspicious IPs
- Unusual traffic patterns to/from the HummerRisk port
SIEM Query:
source="hummerrisk" AND (regionId="*;*" OR regionId="*|*" OR regionId="*`*" OR regionId="*$(*" OR regionId="*&*" OR regionId="*>" OR regionId="*<*")