Jenkins Script Security Plugin Vulnerability Affects Jenkins by CloudBees
CVE-2026-42519

4.3MEDIUM

Key Information:

Vendor

Jenkins
Status
Jenkins Script Security Plugin
Vendor
CVE Published:
29 April 2026

What is CVE-2026-42519?

A flaw in the Jenkins Script Security Plugin allows attackers with the Overall/Read permission to gain unauthorized access, enabling them to enumerate both pending and approved classpaths. This exposes sensitive scripts and configurations, potentially leading to further exploitation or unauthorized actions within the Jenkins environment. It is crucial for users to update their plugins to mitigate the risks posed by this vulnerability, as detailed in Jenkins Security Advisory 2026-04-29.

Affected Version(s)

Jenkins Script Security Plugin 0 <= 1399.ve6a_66547f6e1

References

https://www.jenkins.io/security/advisory/2026-04-29/#SECU...
vendor-advisory

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.