CVE-2026-8592: Rapid7 InsightConnect AWK Plugin OS Command Injection (CVSS 7.7)

Technical summary

CVE-2026-8592 is an OS command injection vulnerability (CWE-78) in the process_string action of the Rapid7 InsightConnect AWK Plugin. The plugin constructs shell commands unsafely, allowing attackers to inject arbitrary OS commands through the text or expression parameters. The vulnerability affects Linux deployments. With a CVSS 3.1 score of 7.7 (HIGH), the attack vector is network-accessible, requires higher-than-normal complexity to exploit, and results in high impact to confidentiality and integrity with limited availability impact.

Business impact

Successful exploitation enables remote code execution on InsightConnect systems, potentially compromising automation workflows, access to integrated systems, and sensitive data processed through those workflows. Organizations using InsightConnect for critical security orchestration or data processing face operational disruption and data breach risk. The plugin's role in automation means a single compromised instance could cascade to dependent systems and processes.

Affected systems

The vulnerability specifically affects Rapid7 InsightConnect AWK Plugin deployed on Linux systems. Organizations running InsightConnect with the AWK plugin enabled should assume exposure. The plugin is commonly used in automation workflows for text processing and pattern matching tasks, making it likely present in many InsightConnect deployments.

Exploitability

The attack requires network access but no authentication or user interaction, making it remotely exploitable by unauthenticated attackers. However, the CVSS metric AC:H indicates higher-than-typical attack complexity—this likely reflects constraints in how the plugin accepts or processes the vulnerable parameters in typical operational contexts. Despite this complexity factor, the vulnerability remains practical to exploit in many real-world configurations.

Remediation

Organizations must update the InsightConnect AWK Plugin to a patched version provided by Rapid7. Verify patch availability against the official Rapid7 advisory for InsightConnect. Interim mitigations should include restricting network access to InsightConnect instances to trusted networks only, disabling the AWK plugin if not actively used, and reviewing automation workflows that rely on the process_string action for unnecessary exposure.

Patch guidance

Check Rapid7's official InsightConnect release notes and security advisories for patched plugin versions. Apply updates promptly given the network-accessible attack vector. Verify the plugin version post-patch in InsightConnect's plugin management interface. Test patches in a staging environment before production deployment to ensure compatibility with existing workflows.

Detection guidance

Monitor InsightConnect logs for suspicious process_string action invocations with unusual text or expression parameter values—particularly those containing shell metacharacters or command separators (pipes, semicolons, backticks, command substitution syntax). Network intrusion detection should flag unexpected outbound connections originating from InsightConnect systems. Check process execution logs on the system hosting InsightConnect for unexpected child processes spawned from the plugin runtime. Endpoint detection and response (EDR) tools should alert on abnormal process execution tied to InsightConnect service accounts.

Why prioritize this

This vulnerability merits immediate attention due to its network-accessible attack vector, lack of authentication requirement, and direct code execution impact. While the AC:H complexity factor suggests some operational constraints, the combination of high confidentiality and integrity impact, plus the centralized nature of InsightConnect in many security operations, elevates practical risk. The vulnerability is not yet listed in CISA's Known Exploited Vulnerabilities catalog, providing a window for proactive patching before active exploitation becomes widespread.

Risk score, explained

The CVSS 3.1 score of 7.7 reflects high severity driven by network accessibility (AV:N), unauthenticated attack surface (PR:N), high confidentiality and integrity impact (C:H/I:H), and the privileged context in which InsightConnect typically operates. The higher attack complexity (AC:H) and limited availability impact (A:L) moderate an otherwise critical score. In practice, the risk to any individual organization depends heavily on whether InsightConnect is internet-facing, how the AWK plugin is integrated into automation, and what systems it can reach.

Frequently asked questions