Node.js: All versions prior to Node.js 6.15.0: Debugger port 5858 listens on any…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-829.
Summary
Node.js: All versions prior to Node.js 6.15.0: Debugger port 5858 listens on any interface by default: When the debugger is enabled with `node --debug` or `node debug`, it listens to port 5858 on all interfaces by default. This may allow remote computers to attach to the debug port and evaluate arbitrary JavaScript. The default interface is now localhost. It has always been possible to start the debugger on a specific interface, such as `node --debug=localhost`. The debugger was removed in Node.js 8 and replaced with the inspector, so no versions from 8 and later are vulnerable.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 3.10 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 3.2 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 3.3 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 3.4 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 3.5 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 3.6 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 3.7 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 3.9 | Affected | No fix yet: Fix deferred |
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
Not affected: 3 products
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Application Runtimes
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2018-12120
- 2026-10-03 Alias added: GHSA-8fqw-43x4-4q75
- 2026-10-08 CISA SSVC decision points changed
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Sources
- CVE-2018-12120 · CVE Program
- CVE-2018-12120 · NVD
- FIRST EPSS
- GHSA-8fqw-43x4-4q75 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-12120 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences