CVE-2026-9155: GNU Sed

High severity, CVSS 8.8. EPSS: 1.6% chance of exploitation in the next 30 days.

OS Command Injection vulnerability in Rapid7 InsightConnect Sed Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the expression parameter due to insufficient input validation.

Affected products

• GNU Sed: version 4.2.2 only

Published 2026-06-25. Last modified 2026-06-27.