FUXA Vulnerable to Pre-auth RCE via Path Manipulation & Configuration Injection
**Pre-auth** RCE in FUXA via Logic Bypass Summary A Critical vulnerability chain exists in FUXA (v.1.3.0-2706) that allows an unauthenticated remote attacker to achieve Full Remote Code Execution (RCE) as root. The exploit succeeds even when the platform is configured in its most secure state (Secure Mode Enabled and Node-RED Secure Auth Enabled). ...
CVSS 7.5 LOW. SENTINEL APEX recommends immediate patch evaluation. Intelligence from 1 confirmed source(s).
📋 Executive Summary
This report analyzes CVE-2026-43945 affecting npm @frangoteam/fuxa. Composite threat score: 44/100. Intelligence corroborated across 1 source(s): github_advisories. CVSS base score: 7.5. No confirmed in-the-wild exploitation at the time of writing; prioritize on exposure, privilege, and CVSS.
⚠️ Business Impact Analysis
- ⚠️ Remote code execution — full server takeover without authentication possible
- ⚠️ Authentication bypass — all access controls circumvented
🔗 Representative Attack Path
A typical attack path for this vulnerability class, mapped to MITRE ATT&CK — a representative model to guide detection and defense, not a claim of observed activity against a specific target. Confirm specifics against the primary sources below.
| # | Phase | Attacker Action | MITRE |
|---|---|---|---|
1 |
Reconnaissance | Attacker identifies exposed @frangoteam/fuxa instances via Shodan, Censys, or targeted scanning | TA0043 |
2 |
Initial Access | Unauthenticated exploitation — no credentials required. Single HTTP request sufficient | T1190 |
3 |
Execution | Remote code execution achieved — attacker runs arbitrary commands on target system | T1203 |
4 |
Persistence | Backdoor, scheduled task, or new admin account created for persistent access | T1053 |
5 |
Command & Control | Attacker establishes persistent C2 channel using HTTPS or DNS tunneling | T1071 |
6 |
Impact / Objectives | Intellectual property theft, espionage, cryptomining, or preparation for future attack stage | T1657 |
⚠ Deep Dive Analysis
This high-severity vulnerability in npm @frangoteam/fuxa (CVSS 7.5) represents a significant attack surface. SENTINEL APEX assesses exploitation to be technically feasible with moderate effort. Organizations running @frangoteam/fuxa in internet-facing or privileged positions face immediate risk.
SENTINEL APEX URGENCY: ELEVATED. Score: 44/100 LOW. Patch before exploitation activity begins.
🎯 MITRE ATT&CK Mapping
| Category | Mapping |
|---|---|
| Primary Tactic | Execution |
| Primary Technique | T1203 — Exploitation for Client Execution |
| Sub-Technique | T1059 — Command & Scripting Interpreter |
| Weakness (CWE) | CWE-94 |
| Intel Type | 🔴 CVE ANALYSIS |
| Source(s) | github_advisories |
🔴 CVE Reference
| CVE ID | Reference | Score |
|---|---|---|
| CVE-2026-43945 | NVD → | 7.5 |
| CVE-2026-43945 | NVD → | 7.5 |
🏷️ Indicators of Compromise — Enriched IOC Feed
Normalized IOCs with confidence scoring. Block immediately across all enforcement points. SOC Pro subscribers receive enriched IOC bundles with full attribution and STIX/TAXII feeds.
| Indicator Value | Type | Confidence | First Seen |
|---|---|---|---|
| socket.io | domain | 75% | 2026-05-26 |
🔍 Detection Rules — Sigma (SIEM)
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📡 Detection Rules — YARA (Endpoint)
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🛡️ SOC Response Playbook
- 1IMMEDIATE (0-1hr): Identify all instances of @frangoteam/fuxa in your environment via CMDB/asset inventory
- 2IMMEDIATE: Block all 1 IOCs in this report at firewall, proxy, DNS, and EDR simultaneously
- 3IMMEDIATE (0-1hr): Apply vendor patch — no maintenance window exception for LOW threats
- 4IMMEDIATE (1-2hr): If no patch available: implement WAF rules, ACLs, or network-level compensating controls
- 5SHORT-TERM (2-4hr): Deploy Sigma detection rule to SIEM — validate alert generation in test environment
- 6SHORT-TERM (4-8hr): Review logs for exploitation indicators (anomalous @frangoteam/fuxa requests, error spikes)
- 7SHORT-TERM (8-24hr): Hunt for post-exploitation: new admin accounts, scheduled tasks, lateral movement
- 8MONITOR: Subscribe to npm security advisories for patch updates
- 9ONGOING: Track SENTINEL APEX intelligence feed for follow-on campaigns targeting @frangoteam/fuxa
📎 Intelligence References
- github.com/advisories/GHSA-p69w-mmfv-xrfj
- github.com/frangoteam/FUXA/security/advisories/GHSA-p69w-mmfv-xrfj
- github.com/frangoteam/FUXA/releases/tag/v1.3.1
- github.com/advisories/GHSA-p69w-mmfv-xrfj
- 📌 NVD — CVE-2026-43945
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Report ID: SENTINEL-CVE-2026-43945-2026-05-26 | Priority: 44/100 LOW | Sources: 1
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