CVE-2026-57296 Jenkins External Workspace Manager Plugin has a path traversal vulnerability
Attackers with configure permissions can read arbitrary files and potentially execute code via path traversal in the Jenkins External Workspace Manager Plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-57296?
CVE-2026-57296 is a high-severity path traversal vulnerability in Jenkins External Workspace Manager Plugin, published on 24 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-57296?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:external-workspace-manager.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:external-workspace-manager Maven | All versions | 1.4.0 |
org.jenkins-ci.plugins:external-workspace-manager Maven | All versions | 1.4.0 |
How do I fix CVE-2026-57296?
Upgrade org.jenkins-ci.plugins:external-workspace-manager to 1.4.0 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-57296 being exploited?
There is no known exploitation of CVE-2026-57296 in the wild and no public exploit code.
Sources
Also known as GHSA-hrmj-8fm9-cg8x.