CVE-2026-42519: Jenkins Script Security Plugin: Missing permission checks allow enumeration of pending and approved classpaths

CVE-2026-42519 · Severity: medium · CVSS 4.3 · Published 2026-04-29

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.

Technologies: Jenkins Script Security, org.jenkins-ci.plugins:script-security (Maven). Vendors: Jenkins, Maven.

Quick answers

Is CVE-2026-42519 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-42519 being exploited in the wild.
How severe is CVE-2026-42519?
Medium severity, with a CVSS score of 4.3, published 29 April 2026.
Which products and versions are affected?
org.jenkins-ci.plugins:script-security (Maven) ECOSYSTEM:introduced=0,fixed=1402.v94c9ce464861.
Is there a fix for CVE-2026-42519?
Yes. org.jenkins-ci.plugins:script-security (Maven): upgrade to 1402.v94c9ce464861 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-42519?
Check whether you run Jenkins Script Security or org.jenkins-ci.plugins:script-security (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.jenkins-ci.plugins:script-security (Maven): upgrade to 1402.v94c9ce464861 or later
    # set org.jenkins-ci.plugins:script-security to 1402.v94c9ce464861 in your pom.xml or build.gradle

Affected products

  • Jenkins Script Security
  • org.jenkins-ci.plugins:script-security (Maven) ECOSYSTEM:introduced=0,fixed=1402.v94c9ce464861

Identifiers

  • CVE-2026-42519
  • GHSA-p334-gfhq-c7w6

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.