What is CVE-2026-8660?

CVE-2026-8660 is a high-severity vulnerability in Linux Linux_kernel, classified under OS Command Injection. CVSS score: 7.7/10. Published 2026-06-25.

How severe is CVE-2026-8660?

High severity. CVSS v3 base score is 7.7 out of 10.

RCE in Linux Linux_kernel

CVE-2026-8660

OS Command Injection vulnerability in the ping action of Rapid7 InsightConnect Ping Plugin on Linux allows remote attackers to execute arbitrary OS commands via the host parameter due to insufficient input validation when constructing shel…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.007 (48.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.

Affected products

Linux Linux_kernel
Rapid7 Insightconnect_ping
Rapid7 Insightconnect Ping Plugin — versions 0, 1.0.4

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

cve@rapid7.com (Product, vendor-advisory)

Frequently asked questions

What is CVE-2026-8660?: CVE-2026-8660 is a high-severity vulnerability in Linux Linux_kernel, classified under OS Command Injection. CVSS score: 7.7/10. Published 2026-06-25.
How severe is CVE-2026-8660?: High severity. CVSS v3 base score is 7.7 out of 10.