CVE-2019-18874: Psutil Project Psutil

High severity, CVSS 7.5. EPSS: 3.5% chance of exploitation in the next 30 days.

psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount mishandling within a while or for loop that converts system data into a Python object.

Affected products

• Psutil Project Psutil: up to and including 5.6.5

Published 2019-11-12. Last modified 2026-06-17.