MEDIUM CVSS 6.0
Published: 2026-06-25

CVE-2026-8664

rapid7 insightconnect_finger Security Advisory (CVE-2026-8664)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-8664 impacting rapid7 insightconnect_finger. Evaluated with CVSS Base Score of 6.0 (MEDIUM).

Original NVD Description

Source: NIST NVD
OS Command Injection vulnerability in Rapid7 InsightConnect Finger Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the user or host parameters due to insufficient input validation in shell command construction.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
High (PR:H)
Administrative credentials required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
Low (C:L)
Partial information leakage
Integrity
High (I:H)
Total modification of target system
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product rapid7 / insightconnect_finger
Affected Versions *
Weakness Enumeration CWE-78

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2026-8664 impacting rapid7 insightconnect_finger.

⚡ Nuclei Detection Template (YAML) cve-2026-8664.yaml
id: cve-2026-8664

info:
  name: rapid7 insightconnect_finger - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2026-8664 affecting rapid7 insightconnect_finger.
    Evaluation: OS Command Injection vulnerability in Rapid7 InsightConnect Finger Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-8664
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L
    cvss-score: 6.0
    cve-id: CVE-2026-8664
    cwe-id: CWE-78
  tags: cve,cve-2026-8664,rapid7,insightconnect_finger,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "insightconnect_finger"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-8664.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-8664
# Target: rapid7 insightconnect_finger | CVSS: 6.0 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-8664 (rapid7 insightconnect_finger)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against rapid7 insightconnect_finger scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2026-8664.sh
# Recommended Remediation & Patching Commands for CVE-2026-8664
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install insightconnect_finger 2>/dev/null || \
sudo dnf upgrade insightconnect_finger 2>/dev/null || \
sudo yum update insightconnect_finger

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i insightconnect_finger 2>/dev/null || rpm -qa | grep -i insightconnect_finger

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-8664 in rapid7 insightconnect_finger?

Review vendor-specific security notices and update rapid7 insightconnect_finger packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2026-8664?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2026-8664?

CVE-2026-8664 is classified with a CVSS 3.1 Base Score of 6.0 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.0
MEDIUM SEVERITY
CVE ID CVE-2026-8664
Weakness CWE-78
Vendor rapid7
Product insightconnect_finger
Published 2026-06-25
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L