CVE-2026-26218

9.8 CRITICAL

📋 TL;DR

CVE-2026-26218 allows unauthenticated attackers to gain administrative control of newbee-mall applications by using predictable default passwords on pre-seeded administrator accounts. This affects deployments that initialize or reset databases using the provided schema without changing default credentials. The vulnerability enables complete compromise of the application.

💻 Affected Systems

Products:
  • newbee-mall
Versions: All versions using the vulnerable database initialization script
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects deployments that use the provided database schema without credential modification.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete administrative takeover of the application, allowing data theft, modification, deletion, and potential lateral movement to other systems.

🟠

Likely Case

Attackers gain administrative privileges, modify content, steal customer data, and potentially deploy malware or backdoors.

🟢

If Mitigated

No impact if default credentials are changed during deployment or if proper access controls prevent external access.

🌐 Internet-Facing: HIGH - Internet-facing deployments are directly accessible to attackers who can attempt default credentials.
🏢 Internal Only: MEDIUM - Internal deployments are still vulnerable to insider threats or compromised internal systems.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploitation requires only knowledge of default credentials and access to the login interface.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not applicable - configuration issue

Vendor Advisory: https://github.com/newbee-ltd/newbee-mall/issues/119

Restart Required: No

Instructions:

1. Identify all newbee-mall deployments. 2. Check database for default administrator accounts. 3. Change all default passwords to strong, unique credentials. 4. Remove or disable unused default accounts.

🔧 Temporary Workarounds

Change Default Credentials

all

Modify all default administrator passwords in the database

UPDATE users SET password = 'new_secure_hash' WHERE username = 'admin' AND password = 'default_hash';

Network Access Control

linux

Restrict access to administrative interfaces using firewall rules

iptables -A INPUT -p tcp --dport 8080 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP

🧯 If You Can't Patch

  • Implement multi-factor authentication for all administrative accounts
  • Deploy web application firewall with credential stuffing protection

🔍 How to Verify

Check if Vulnerable:

Attempt to log in to the administrative interface using known default credentials (check GitHub issue for specifics)

Check Version:

Check application configuration files or database for default credential usage

Verify Fix Applied:

Verify default credentials no longer work and all administrative accounts have strong, unique passwords

📡 Detection & Monitoring

Log Indicators:

  • Multiple failed login attempts followed by successful admin login
  • Administrative actions from unexpected IP addresses

Network Indicators:

  • Authentication requests to admin endpoints from external IPs
  • Unusual administrative traffic patterns

SIEM Query:

source="web_logs" (action="login" AND user="admin" AND result="success") | stats count by src_ip

🔗 References

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