CVE-2026-70431Network attack vectorHinoki check available

Authenticated controller code execution via unsandboxed Groovy scripts

Published Aug 5, 2026 · Updated Aug 5, 2026

Code injection in Jenkins Multijob Plugin 669.v9d96a_d9c71b_0 and earlier allows remote authenticated users to execute controller-JVM code. Its Groovy scripting features execute user-configured scripts without routing them through Script Security Plugin for approval or sandbox enforcement. Item/Create or Item/Configure permission is sufficient, and successful exploitation runs arbitrary code with the Jenkins controller process's access.

CVSS severity8.8
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code injection in Jenkins Multijob Plugin 669.v9d96a_d9c71b_0 and earlier allows remote authenticated users to execute controller-JVM code. Its Groovy scripting features execute user-configured scripts without routing them through Script Security Plugin for approval or sandbox enforcement. Item/Create or Item/Configure permission is sufficient, and successful exploitation runs arbitrary code with the Jenkins controller process's access.

The record

CVE
CVE-2026-70431
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Jenkins Project
Product
Multijob Plugin
Classifications
CWE-94, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=669.v9d96a_d9c71b_0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Multijob Pluginversion=0 <=669.v9d96a_d9c71b_0

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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