CVE-2026-8592 in InsightConnect AWK Plugin
Summary
by MITRE • 06/25/2026
OS Command Injection vulnerability in the process_string action of Rapid7 InsightConnect AWK Plugin on Linux allows remote attackers to execute arbitrary OS commands via the text or expression parameters due to unsafe shell command construction in the processing pipeline.
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Analysis
by VulDB Data Team • 06/25/2026
This vulnerability represents a critical operating system command injection flaw within the Rapid7 InsightConnect AWK plugin ecosystem, specifically affecting Linux environments where the process_string action is utilized. The security weakness stems from improper input validation and sanitization mechanisms that fail to adequately filter user-supplied data before incorporating it into shell command executions. Attackers can exploit this vulnerability by manipulating the text or expression parameters through remote access points, effectively bypassing normal execution boundaries to inject malicious commands that will execute with the privileges of the affected service.
The technical implementation of this flaw occurs within the processing pipeline where user-provided input flows directly into shell command construction without appropriate sanitization or escaping mechanisms. This pattern aligns with common command injection vulnerabilities classified under CWE-78, which specifically addresses improper neutralization of special elements used in OS commands. The vulnerability manifests when the AWK plugin constructs shell commands using string concatenation or interpolation techniques that do not properly escape special shell characters, allowing attackers to inject additional commands separated by shell operators such as semicolons, pipes, or ampersands.
The operational impact of this vulnerability extends beyond simple command execution to encompass potential privilege escalation scenarios and system compromise. Remote attackers with network access to systems running the affected InsightConnect plugin can leverage this weakness to execute arbitrary code on the target system, potentially leading to full system control, data exfiltration, or persistence mechanisms establishment. The attack surface is particularly concerning in enterprise environments where InsightConnect plugins are deployed for security automation and monitoring purposes, as these systems often run with elevated privileges.
From a threat modeling perspective, this vulnerability maps directly to several ATT&CK techniques including T1059.001 for command and scripting interpreter execution, and T1068 for exploit for privilege escalation. The attack chain typically involves initial reconnaissance to identify vulnerable systems, followed by exploitation of the input validation weakness to inject malicious payloads that can execute in the context of the target service account. Organizations utilizing Rapid7 InsightConnect for security orchestration and automation are particularly at risk since these plugins often operate with elevated permissions to perform system monitoring and response activities.
The remediation approach requires immediate implementation of proper input sanitization and validation mechanisms that prevent special shell characters from being interpreted as command operators. This includes implementing parameterized command execution where possible, using allowlists for valid input patterns, and employing proper escaping techniques for shell command construction. Organizations should also consider implementing network segmentation to limit access to systems running vulnerable plugins, deploying intrusion detection systems to monitor for suspicious command execution patterns, and conducting comprehensive vulnerability assessments of all InsightConnect plugin installations. Additionally, regular security updates and patches from Rapid7 should be applied immediately upon availability to address this critical flaw and prevent exploitation attempts by threat actors actively targeting similar vulnerabilities in security automation platforms.