CVE-2026-90770: Openspug Spug

High severity, CVSS 8.8. EPSS: 1.3% chance of exploitation in the next 30 days.

Spug through 3.4.0 contains a remote code execution vulnerability in the ping_check function that interpolates user-supplied monitor addresses directly into shell commands without validation. Authenticated users with monitor permissions can inject shell metacharacters via the /monitor/run_test/ endpoint to execute arbitrary commands as the Spug process user.

Affected products

• Openspug Spug: up to and including 3.4.0

Published 2026-09-13. Last modified 2026-09-23.