CVE-2026-8666: RAPID7 Insightconnect Traceroute

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

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.

Affected products

• RAPID7 Insightconnect Traceroute: before 1.0.3 (fixed in 1.0.3)

Published 2026-06-25. Last modified 2026-06-29.