CVE-2026-57296: Jenkins Project Jenkins External Workspace Manager Plugin

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Jenkins External Workspace Manager Plugin 1.3.2 and earlier does not reject path traversal sequences in the custom workspace path provided to the exwsAllocate Pipeline step, allowing attackers with Item/Configure permission to read arbitrary files on the Jenkins controller file system, which can lead to remote code execution.

Affected products

• Jenkins Project Jenkins External Workspace Manager Plugin: up to and including 1.3.2

Published 2026-06-24. Last modified 2026-06-25.