Script security sandbox bypass in Jenkins Email Extension Plugin

published 2019-03-08 7 y ago modified 2026-06-17 4 mo ago also GHSA-qwm8-vgm6-f86p , EUVD-2022-5047

cvss: 9.9; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.4%; EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits: 0; none known

A sandbox bypass vulnerability exists in Jenkins Email Extension Plugin 2.64 and earlier in pom.xml, src/main/java/hudson/plugins/emailext/ExtendedEmailPublisher.java, src/main/java/hudson/plugins/emailext/plugins/content/EmailExtScript.java, src/main/java/hudson/plugins/emailext/plugins/content/ScriptContent.java, src/main/java/hudson/plugins/emailext/plugins/trigger/AbstractScriptTrigger.java that allows attackers with Job/Configure permission to execute arbitrary code on the Jenkins master JVM.

Patch / fix

fixed in 1

maven org.jenkins-ci.plugins:email-ext 2.65

Exploit prediction

2.44% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.jenkins-ci.plugins:email-ext	<2.65	2.65

Affected products

Jenkins project Jenkins Email Extension Plugin

Classification

Weakness

CWE-693 Protection Mechanism Failure

References

jenkins.io /security/advisory/2019-03-06/#SECURITY-1340
web, vendor-advisory
securityfocus.com /bid/107476
vdb-entry, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2019-1003032
advisory
github.com /jenkinsci/email-ext-plugin
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary