CVE-2020-2110Network attack vector

Authenticated sandbox bypass via AST annotations

Published Feb 12, 2020 · Updated Aug 4, 2024

Improper input validation in Jenkins Script Security Plugin 1.69 and earlier allows remote authenticated users to execute arbitrary code via crafted Groovy annotations. During script compilation, AST-transforming annotations applied to imports or nested inside other annotations evade the plugin's sandbox restrictions. Exploitation requires Overall/Read permission and reaches code execution on the Jenkins controller JVM, with confidentiality, integrity, and availability impact.

CVSS severity8.8
High
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Jenkins Script Security Plugin 1.69 and earlier allows remote authenticated users to execute arbitrary code via crafted Groovy annotations. During script compilation, AST-transforming annotations applied to imports or nested inside other annotations evade the plugin's sandbox restrictions. Exploitation requires Overall/Read permission and reaches code execution on the Jenkins controller JVM, with confidentiality, integrity, and availability impact.

The record

CVE
CVE-2020-2110
Published
Feb 12, 2020
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
Jenkins Script Security Plugin
Classifications
CWE-20, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=unspecified <=1.69

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Jenkins Script Security Pluginversion=unspecified <=1.69

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

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.

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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-20Improper Input Validation
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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