What is CVE-2026-42519?

CVE-2026-42519 is a medium-severity vulnerability in Jenkins Script_security, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-04-29.

How severe is CVE-2026-42519?

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

Auth bypass in Jenkins Script_security

CVE-2026-42519

A missing permission check in Jenkins Script Security Plugin 1399.ve6a_66547f6e1 and earlier allows attackers with Overall/Read permission to enumerate pending and approved Script Security classpaths.

Vulnerability class: Broken Access Control

EPSS: 0.001 (31.5th 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 Script_security
Jenkins Project Script Security Plugin — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Jenkins Security Advisory 2026-04-29 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42519?: CVE-2026-42519 is a medium-severity vulnerability in Jenkins Script_security, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-04-29.
How severe is CVE-2026-42519?: Medium severity. CVSS v3 base score is 4.3 out of 10.