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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (22.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Jenkins Project External Workspace Manager Plugin — versions 0
Weakness classification (CWE)
References
- www.jenkins.io/security/advisory/2026-08-05/ (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.