dbcve.org
Insightconnect FingerApplication · Rapid7

CVE-2026-8664

HIGH · 8.8 CVSS v3.1 Published 2026-06-25
Fix available
A fix is available. Upgrade to 1.0.3 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click 8 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

OS Command Injection vulnerability in Rapid7 InsightConnect Finger Plugin on Linux allows authenticated attackers to execute arbitrary OS commands through the user or host parameters due to insufficient input validation when constructing shell commands.

MitigationImplement strict input validation and sanitization for user and host parameters before incorporating them into shell commands; use parameterized command execution or whitelist validation to prevent command injection.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Insightconnect FingerApplication
Affected:< 1.0.3

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Locate InsightConnect Finger Plugin installation
    Search for the Finger plugin directory within the InsightConnect installation path, typically found under /opt/rapid7/insightconnect/plugins/ or similar installation directory. List contents to find the 'finger' plugin folder.
    Affected if The Finger plugin directory exists on a Linux system running InsightConnect.
  2. Identify Finger Plugin version
    Inspect the plugin's manifest or version file, commonly named 'plugin.spec', 'manifest.json', or 'version.txt' within the Finger plugin directory. Extract the version number.
    Affected if The installed version is lower than 1.0.3 (e.g., 1.0.2, 1.0.1, 1.0.0).
  3. Verify Linux operating system
    Run 'uname -a' or check /etc/os-release to confirm the underlying OS is Linux. This vulnerability applies only to Linux environments.
    Affected if The system is running Linux.
  4. Confirm plugin is configured with user or host input
    Review the plugin workflow or configuration files in InsightConnect to determine if the Finger plugin is invoked with dynamic user-supplied or host-supplied parameters, rather than static values.
    Affected if The plugin is configured to accept user or host parameters from external sources or user input fields.
  5. Check for authenticated access to InsightConnect
    Determine if the InsightConnect platform allows authenticated user access, particularly to workflows involving the Finger plugin. Review user permissions and access controls.
    Affected if Authenticated users can access and trigger workflows using the Finger plugin.

You are affected if the Finger plugin version is below 1.0.3 on a Linux system with InsightConnect, and the plugin is configured to accept dynamic user or host parameters that authenticated users can influence.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.0.3 or later
Fixed in 1.0.3
Interim mitigation

Implement strict input validation and sanitization for user and host parameters before incorporating them into shell commands; use parameterized command execution or whitelist validation to prevent command injection.

Recommended fix High confidence

Finger plugin version 1.0.3 or later

  1. Log in to the InsightConnect platform
  2. Navigate to the Finger plugin settings or plugin management section
  3. Identify the current version of the Finger plugin installed
  4. Upgrade the Finger plugin to version 1.0.3 or later
  5. Verify the upgrade was successful by confirming the new version number
  6. Test the plugin functionality to ensure it operates correctly after the upgrade

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Insightconnect Finger Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-8664 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data