CVE-2026-84670: Jenkins Project Jenkins Performance Plugin

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Jenkins Performance Plugin 1015.v09ca_52b_3370e and earlier does not restrict the classes that can be instantiated when deserializing cached performance reports stored in the build directory on the Jenkins controller, allowing attackers with Item/Configure permission to execute arbitrary code on the Jenkins controller.

Affected products

• Jenkins Project Jenkins Performance Plugin: up to and including 1015.v09ca_52b_3370e

Published 2026-09-02. Last modified 2026-09-03.