CVE-2026-8666 OS Command Injection in Rapid7 InsightConnect Traceroute Plugin
Remote attackers can execute arbitrary OS commands via insufficient input validation in the traceroute action parameters of the Rapid7 InsightConnect Traceroute Plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8666?
CVE-2026-8666 is a high-severity command injection vulnerability in Rapid7 InsightConnect Traceroute Plugin, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-8666?
It affects 1 product.
Products include Rapid7 Insightconnect Traceroute.
How do I fix CVE-2026-8666?
No fix has been published for CVE-2026-8666 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-8666 being exploited?
There is no known exploitation of CVE-2026-8666 in the wild and no public exploit code.
Sources
Also known as GHSA-5854-xw4j-hrh6.