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CVE-2019-16538

26
FAUCET Score

CVE-2019-16538 is a sandbox bypass vulnerability affecting Jenkins Script Security Plugin versions 1.67 and earlier. It allows authenticated attackers to execute arbitrary code within sandboxed scripts by manipulating default parameter expressions in closures. With a CVSS score of 8.8 (High), this vulnerability poses a significant risk, enabling full compromise of confidentiality, integrity, and availability with low attack complexity. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.67CPE matchmatch criteria
cpe:2.3:a:jenkins:script_security:*:*:*:*:*:jenkins:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 68th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

mavenpatch availablevia ghsa
Product: org.jenkins-ci.plugins:script-securityFixed in: 1.68
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: jenkins-2-plugins-0:3.11.1591354111-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: jenkins-2-plugins-0:4.3.1597915133-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.4Fixed in: jenkins-2-plugins-0:4.4.1592817009-1.el7
View patch

Vendor Advisories (2)

mavenGHSA-62pm-mgrh-7p69high

Incorrect Authorization in Jenkins Script Security Plugin

May 24, 2022
redhatCVE-2019-16538Important

jenkins-script-security-plugin: sandbox protection bypass leads to execute arbitrary code in sandboxed scripts

Nov 21, 2019

References

jenkins.io / security/advisory/2019-11-21
Vendor Advisory
openwall.com / lists/oss-security/2019/11/21/1
Mailing ListThird Party Advisory