Actively exploited

CVE-2019-1003030 Jenkins Matrix Project Plugin Remote Code Execution Vulnerability

Jenkins Matrix Project plugin contains a vulnerability which can allow users to escape the sandbox, opening opportunity to perform remote code execution.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment

CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 25 Mar 2022.
Rated Critical severity (CVSS 9.9, scored by CISA).
This product type is often exposed to the internet, which is where attackers scan for it first.
It has been in the catalogue for 1,687 days. Systems still unpatched now have almost certainly been scanned for it.

The Vulnerability

What It Is

A sandbox bypass vulnerability exists in Jenkins Pipeline: Groovy Plugin 2.63 and earlier in pom.xml, src/main/java/org/jenkinsci/plugins/workflow/cps/CpsGroovyShell.java that allows attackers able to control pipeline scripts to execute arbitrary code on the Jenkins master JVM.

Affected Versions

Product	Versions
Jenkins project Jenkins Pipeline: Groovy Plugin	2.63 and earlier

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

1
Find it
Search your asset inventory and external attack surface for Jenkins Matrix Project Plugin. Include cloud images, appliances and anything a supplier runs for you.
Attack Surface Management
2
Fix it
Apply updates per vendor instructions.
Vulnerability Management
3
Hunt for compromise
If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.
Incident Response
4
Prove it is fixed
Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.
Penetration Testing

Vendor Advisories

nvd.nist.gov/vuln/detail/CVE-2019-1003030

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 15 Apr 2022 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Jenkins Flaws

All 6 exploited Jenkins vulnerabilities

Not Sure If You Are Exposed?

Our attack surface and vulnerability teams can check your internet-facing estate for CVE-2019-1003030 and every other exploited flaw on the list.

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Evidence

PREVENTION

DETECTION & MITIGATION

GRC

INCIDENT RESPONSE

CLOUD SECURITY

CRITICAL INFRASTRUCTURE

REGULATED SERVICES

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MANAGED SECURITY

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DATA & APPLICATIONS

PEOPLE & EMAIL

FOR VENDORS

CVE-2019-1003030 Jenkins Matrix Project Plugin Remote Code Execution Vulnerability

Should You Worry?

What It Is

Affected Versions

What To Do Now

Find it

Fix it

Hunt for compromise

Prove it is fixed

Vendor Advisories

The Compliance Clock

More Exploited Jenkins Flaws

Not Sure If You Are Exposed?

Sources