CVE-2021-43578: Jenkins Squash TM Publisher

High severity, CVSS 8.1. EPSS: 1.1% chance of exploitation in the next 30 days.

Jenkins Squash TM Publisher (Squash4Jenkins) Plugin 1.0.0 and earlier implements an agent-to-controller message that does not implement any validation of its input, allowing attackers able to control agent processes to replace arbitrary files on the Jenkins controller file system with an attacker-controlled JSON string.

Affected products

• Jenkins Squash TM Publisher: up to and including 1.0.0

Published 2021-11-12. Last modified 2026-06-17.