# CVE-2026-8664: Rapid7 InsightConnect Finger Plugin OS command injection

Source: https://junglewise.ai/threats/cve-2026-8664-rapid7-insightconnect-finger-plugin-os-command-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-25. Updated: 2026-06-25  
License: CC BY 4.0 with a link back

CVE-2026-8664 · Severity: medium · CVSS 6 · Published 2026-06-25

The Rapid7 InsightConnect Finger plugin, used for automating user information lookups on Linux systems, contains a security flaw that allows authorized users to run unauthorized commands. An attacker with administrative credentials could exploit this to gain deeper access to the underlying server, potentially leading to data modification or service disruption. Organizations should update the plugin to version 1.0.3 or later to resolve this issue.

Vendors: [Rapid7](https://junglewise.ai/threats/vendors/rapid7).

## Quick answers

**Is CVE-2026-8664 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8664 being exploited in the wild.

**How severe is CVE-2026-8664?** Medium severity, with a CVSS score of 6, published 25 June 2026.

**Which products and versions are affected?** Rapid7 InsightConnect Finger Plugin < 1.0.3.

**Is there a fix for CVE-2026-8664?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-8664 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-8664?** Check whether you run Rapid7 InsightConnect Finger Plugin at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An OS command injection vulnerability (CWE-78) exists in the Rapid7 InsightConnect Finger Plugin on Linux. The flaw is rooted in insufficient input validation of the 'user' and 'host' parameters during the construction of shell commands. An authenticated attacker with high privileges (PR:H) can exploit this over the network to execute arbitrary OS commands on the host system. The vulnerability is addressed in version 1.0.3 of the plugin.

## Affected products

- Rapid7 InsightConnect Finger Plugin < 1.0.3

## Timeline

- 2026-06-25: disclosed
- 2026-06-25: advisory

## References

- [https://extensions.rapid7.com/extension/finger](https://extensions.rapid7.com/extension/finger)