What is CVE-2026-84659?

CVE-2026-84659 is a medium-severity vulnerability in Jenkins Project Script Security Plugin, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-02.

How severe is CVE-2026-84659?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Jenkins Project Script Security Plugin

CVE-2026-84659

Jenkins Script Security Plugin 1412.v7737b_3405f86 and earlier does not enforce a permission check in the method that controls the "Force the use of the sandbox globally in the system" setting, allowing attackers to disable it through Stapler data binding.

Vulnerability class: Broken Access Control

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:N/I:L/A:N.

Affected products

Jenkins Project Script Security Plugin

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

jenkinsci-cert@googlegroups.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-84659?: CVE-2026-84659 is a medium-severity vulnerability in Jenkins Project Script Security Plugin, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-02.
How severe is CVE-2026-84659?: Medium severity. CVSS v3 base score is 4.3 out of 10.