External risk intelligence

Rapid7 InsightConnect AWK Plugin OS Command Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-8592

This vulnerability affects a plugin for InsightConnect, an automation and orchestration platform. Such platforms are typically deployed as edge-connected services or gateways to integrate with external systems, making the processing components of these plugins commonly exposed or reachable via the platform's internet-facing automation workflows.

OS Command Injection

Rapid7 Insightconnect Awk

before 1.2.2

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in the Rapid7 InsightConnect AWK Plugin on Linux systems. This issue, stemming from how the plugin processes certain text or expression inputs, could allow remote attackers to run unauthorized commands on the underlying operating system. The main concern at this time is confirming whether this specific plugin and its affected version are in use within our environment.

Unsafe command processing allows arbitrary code execution.
Affects automation and orchestration, potentially at the edge.
Confirm relevance and exposure to our systems.

Attack Path

How an attacker could exploit the issue

An attacker could reach this vulnerability by sending specially crafted input to a system running the Rapid7 InsightConnect AWK Plugin. The plugin processes text or expressions in a way that is susceptible to command injection, allowing attackers to run their own commands on the underlying Linux system. This could lead to a complete compromise of the affected server.

Requires no authentication.
Triggered by crafted input to text/expression parameters.
Risk of arbitrary command execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow remote attackers to execute arbitrary operating system commands on a Linux system through the Rapid7 InsightConnect AWK Plugin. This occurs when the plugin unsafely constructs shell commands using user-supplied input in the `text` or `expression` parameters within the `process_string` action.

Arbitrary OS commands could be executed.
Unsafe shell command construction exposes the system.
Compromise of system integrity and confidentiality.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in the Rapid7 InsightConnect AWK Plugin necessitates immediate attention from platform and security teams responsible for managing automation workflows. The first practical step is to identify all instances of the affected plugin, determine their reachability and business criticality, and then pinpoint the accountable owners to initiate a coordinated remediation plan based on the assessed risk.

Platform and security teams own the issue.
Verify plugin reachability and business criticality first.
Plan remediation based on exposure and risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the Rapid7 InsightConnect AWK Plugin?

This component is a plugin for Rapid7's InsightConnect, an automation and orchestration platform designed to streamline security workflows. It specifically enables users to perform text and pattern processing using the AWK language within their automated tasks on Linux systems. By integrating this functionality, the platform can parse logs or transform data as part of a larger security pipeline.

How does CVE-2026-8592 allow command injection?

This vulnerability is classified as CWE-78: OS Command Injection. It occurs because the plugin fails to properly validate or sanitize user input before passing it to the underlying system shell. When the 'process_string' action receives malicious content through specific parameters, the shell interprets that input as an executable command, allowing unauthorized operations to be performed on the host operating system.

Can any input trigger this vulnerability?

No. The flaw specifically resides in the 'text' or 'expression' parameters of the plugin's 'process_string' action. The vulnerability is triggered only when these specific fields contain crafted inputs that the plugin's pipeline then processes unsafely. Standard interactions that do not utilize these parameters or that pass benign, well-formed data do not activate the insecure shell construction pipeline.

Do I need to worry about internet exposure for this plugin?

Yes. According to Halo Surface Signal, this vulnerability is considered 'Likely' to be reachable. Because InsightConnect is often deployed as an edge-connected service or a gateway to bridge internal and external systems, the processing components of its plugins are frequently positioned where they can receive inputs from broader network workflows, increasing the risk of remote access.

How should I respond to this vulnerability?

The primary goal is to determine if your environment uses the affected version of the AWK plugin. Start by identifying all instances of the plugin within your automation workflows to gauge their specific reachability and the criticality of the tasks they perform. Once identified, coordinate with the responsible platform owners to plan for updates to version 1.2.2 or higher, which remediates the underlying shell construction flaw.

References

extensions.rapid7.com/extension/awk

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.