GitHub Advisoryadvisory · Maven

GHSA-hrmj-8fm9-cg8x Jenkins External Workspace Manager Plugin has a path traversal vulnerability

HIGH Published 2026-06-24 Modified 2026-09-25 Official page ↗
Aliases
CVE-2026-57296
Ecosystem
Maven
Packages
org.jenkins-ci.plugins:external-workspace-manager
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-22
Reviewed
2026-09-25

Affected packages

• Maven org.jenkins-ci.plugins:external-workspace-manager: < 1.4.0 → fixed in 1.4.0

Description

Jenkins External Workspace Manager Plugin 1.3.2 and earlier does not reject `..` path segments when validating the custom workspace path provided to the `exwsAllocate` Pipeline step, allowing the resulting workspace path to escape the configured disk mount point. This allows attackers with Item/Configure permission to read arbitrary files on the Jenkins controller file system, which can lead to remote code execution (see Reading Files). External Workspace Manager Plugin 1.4.0 rejects `..` path segments when validating the custom workspace path, and additionally verifies that the requested path is contained within the configured disk mount point before serving it through the external workspace browse functionality.

Related

Alias · CVE (1)

  • CVE-2026-57296 Jenkins External Workspace Manager Plugin 1.3.2 and earlier does not reject path traversal sequences in the custom workspace path provided… vulnerability

Weakness · CWE (1)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness

References