Exploited. On CISA's list since 2022-04-25.
Jenkins Script Security Plugin Sandbox Bypass Vulnerability
CVE-2019-1003029 · Jenkins Script Security Plugin · Published 2019-03-08
How bad would it be?
9.9 out of 10
CVSS rates it critical: about as damaging as flaws get.
How likely is it to be used?
74%
Estimated chance of exploitation in the next 30 days, among the top 1% of all scored flaws (EPSS, 2026-10-29).
Is it already being used?
Yes
CISA has seen it exploited in real attacks. For US government agencies the fix is deadline passed 1628 days ago (2022-05-16).
What CISA says to do
Apply updates per vendor instructions.
Jenkins Script Security Plugin contains a protection mechanism failure, allowing an attacker to bypass the sandbox.
What the flaw is
A sandbox bypass vulnerability exists in Jenkins Script Security Plugin 1.53 and earlier in src/main/java/org/jenkinsci/plugins/scriptsecurity/sandbox/groovy/GroovySandbox.java, src/main/java/org/jenkinsci/plugins/scriptsecurity/sandbox/groovy/SecureGroovyScript.java that allows attackers with Overall/Read permission to execute arbitrary code on the Jenkins master JVM.
From the NVD.
Learn this
Explore this week’s weaknesses and all learning topics
Understand the kind of weakness behind this flaw. These resources teach the weakness, rather than reproduce this specific CVE. Follow the vendor's advice above to fix the affected product.
The saved records do not give a specific CWE weakness label, so we cannot choose a matching resource yet.
CWE is a catalogue of weakness types. Labels come from the sources shown and can differ or change. Resource matches reviewed 16 October 2026.
On SentryFeed
No story in the last 14 days has mentioned it.
Exploited flaws from CISA's KEV catalogue. Chance of exploitation from EPSS by FIRST. Descriptions and scores from the NVD. This product uses the NVD API but is not endorsed or certified by the NVD.