CVE-2026-47668 – Unauthenticated Remote Code Execution via Code Injection – DbGate ≤ 7.1.8

Summary

CVE-2026-47668 is a critical unauthenticated Remote Code Execution (RCE) vulnerability in DbGate, a cross-platform web-based database manager. Affecting all versions up to and including 7.1.8, the flaw resides in DbGate’s JSON script runner endpoint, where user-supplied input is interpolated directly into dynamically generated JavaScript without sanitization and subsequently executed in a forked Node.js child process. The vulnerability carries a maximum CVSS v3.1 base score of 10.0 (Critical) and requires no authentication, no user interaction, and no special privileges to exploit.

Technical details

• Root cause: The assignCore() method in ScriptWriter.ts constructs executable JavaScript by directly concatenating the attacker-controlled functionName (and variableName) parameters from JSON assign commands into generated source code without any input validation or sanitization. By default, DbGate ships with authentication disabled, meaning the endpoint is reachable by any unauthenticated network peer.
• Trigger condition: An attacker sends a crafted HTTP POST request to the /runners/start endpoint containing a JSON script with a malicious assign command. The injected payload (e.g., "x;MALICIOUS_CODE;//") forms syntactically valid JavaScript that causes arbitrary code to execute before the intended code path.
• Attack vector: Network-accessible, no authentication required (PR:N, UI:N). On default DbGate deployments where authentication is disabled, exploitation is fully unauthenticated. Even on authenticated deployments, any authorized user can trigger the vulnerability.
• Execution context: The injected code runs inside a forked Node.js child process with access to system resources, enabling arbitrary OS command execution at the privilege level of the DbGate process.
• Impact: Full remote code execution — including arbitrary OS command execution, credential and data exfiltration, lateral movement within internal networks, and complete host takeover. The CVSS scope change (S:C) reflects that exploitation can affect resources beyond the DbGate process itself.
• Public exploit availability: A public proof-of-concept exploit is available at https://github.com/Nxploited/CVE-2026-47668, and an automated detection template has been merged into the nuclei-templates project.

Affected software

• DbGate (dbgate / dbgate-serve): all versions ≤ 7.1.8

Severity

• CVSS v3.1 Base Score: 10.0 (Critical)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
• CWEs: CWE-94 (Code Injection), CWE-20 (Improper Input Validation), CWE-1188 (Insecure Default Initialization)

Mitigation and recommended actions

• Immediate patch: Upgrade DbGate / dbgate-serve to version 7.1.9 or later, which introduces validation for function and file names and resolves the code injection flaw.
• Enable authentication: If immediate patching is not possible, explicitly configure authentication on DbGate deployments rather than relying on the default anonymous mode. Restrict access to the /runners/start endpoint to trusted users and networks only.
• Network isolation: Ensure DbGate instances are not exposed directly to the internet. Place instances behind a firewall or VPN and restrict inbound access to the management interface ports (commonly 3000 or 5003).
• Audit logs: Review application logs for unexpected or unauthorized POST requests to /runners/start as an indicator of exploitation attempts.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

• CVE-2026-47668 at NIST
• DbGate Security Advisory (GHSA-8v3q-9vmx-36vc)
• DbGate v7.1.9 Release