CVE-2020-26124: Openmediavault

High severity, CVSS 8.8. EPSS: 66.8% chance of exploitation in the next 30 days.

openmediavault before 4.1.36 and 5.x before 5.5.12 allows authenticated PHP code injection attacks, via the sortfield POST parameter of rpc.php, because json_encode_safe is not used in config/databasebackend.inc. Successful exploitation allows arbitrary command execution on the underlying operating system as root.

Affected products

• Openmediavault Openmediavault: before 4.1.36 (fixed in 4.1.36); from 5.0.0, before 5.5.12 (fixed in 5.5.12)

Published 2020-10-02. Last modified 2026-06-17.