Auth bypass in Jenkins Project External Workspace Manager Plugin
CVE-2026-70436
Jenkins External Workspace Manager Plugin 1.4.1 and earlier does not perform a permission check (1.4.0 and earlier) or performs an improper permission check (1.4.1) when providing access to externally-managed workspaces through the workspace browser, allowing attackers with Overall/Read permission to read files in workspaces they are not authorized to access.
Vulnerability class: Broken Access Control
EPSS: 0.002 (12.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Jenkins Project External Workspace Manager Plugin — versions 0
Weakness classification (CWE)
References
- jenkinsci-cert@googlegroups.com (vendor-advisory)
Frequently asked questions
- What is CVE-2026-70436?
- CVE-2026-70436 is a medium-severity vulnerability in Jenkins Project External Workspace Manager Plugin, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-08-05.
- How severe is CVE-2026-70436?
- Medium severity. CVSS v3 base score is 4.3 out of 10.