Detect CVE-2026-47668: DbGate Unauthenticated RCE via JSON Script Runner in Sumo Logic CSE
Detects exploitation of CVE-2026-47668, a critical unauthenticated remote code execution vulnerability in dbgate-serve <= 7.1.8. The JSON Script Runner endpoint accepts and executes arbitrary JavaScript/JSON payloads without authentication, allowing attackers to achieve full server compromise. A public PoC is available.
MITRE ATT&CK
- Tactic
- Initial Access Execution Persistence Impact
Sumo Detection Query
_sourceCategory=web/access OR _sourceCategory=proxy/access OR _sourceCategory=iis/access
| parse regex "(?<method>POST|GET|PUT|DELETE|PATCH) (?<uri>\S+)"
| where method = "POST"
| where uri matches "*/script/run*" or uri matches "*/script/execute*" or uri matches "*/run-script*" or uri matches "*/api/script*"
| parse regex "\"Authorization:\\s*(?<auth_header>[^\"]+)\"" nodrop
| where isNull(auth_header) or auth_header = ""
| parse regex "(?<src_ip>\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})" as client_ip
| count as request_count by client_ip, uri
| sort by request_count desc
| where request_count > 0
| fields client_ip, uri, request_countSumo Logic query detecting unauthenticated POST requests to dbgate-serve script execution endpoints, parsed from web access logs.
Data Sources
Required Tables
False Positives & Tuning
- Development environments with intentionally open dbgate instances
- Log sources that do not include authorization headers in access logs
- Automated testing frameworks in CI/CD pipelines
Other platforms for CVE-2026-47668
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1CVE-2026-47668 PoC — Unauthenticated Script Execution via curl
Expected signal: HTTP POST to /script/run with JSON body containing require('child_process'); Node.js spawns a child process (execve syscall with ppid=node); file /tmp/pwned.txt created by node process user
- Test 2CVE-2026-47668 — Reverse Shell Payload via Script Runner
Expected signal: Node.js spawns /bin/sh child process; outbound TCP connection from node process to ATTACKER_IP:4444 visible in netflow and EDR network telemetry
- Test 3CVE-2026-47668 — Version Fingerprinting and Endpoint Discovery
Expected signal: Multiple GET and POST requests to dbgate host from single source IP in short succession; POST to /script/run with simple JS payload; file write event from node process
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