CVE-2020-2135Network attack vector

Controller code execution via misrouted Groovy calls

Published Mar 9, 2020 · Updated Aug 4, 2024

Sandbox bypass in Jenkins Script Security Plugin 1.70 and earlier allows remote authenticated users to execute code on the controller. GroovyCallSiteSelector resolves crafted calls on GroovyInterceptable objects as ordinary target methods instead of routing them through GroovyObject.invokeMethod, so the sandbox misses the dangerous signature. The user must be able to specify and run a sandboxed script; successful exploitation executes arbitrary code with the Jenkins controller JVM's privileges.

CVSS severity8.8
High
EPSS probability1.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox bypass in Jenkins Script Security Plugin 1.70 and earlier allows remote authenticated users to execute code on the controller. GroovyCallSiteSelector resolves crafted calls on GroovyInterceptable objects as ordinary target methods instead of routing them through GroovyObject.invokeMethod, so the sandbox misses the dangerous signature. The user must be able to specify and run a sandboxed script; successful exploitation executes arbitrary code with the Jenkins controller JVM's privileges.

The record

CVE
CVE-2020-2135
Published
Mar 9, 2020
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
Jenkins Script Security Plugin
Classifications
CWE-863, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 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 <=1.70

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Jenkins Script Security Pluginversion=unspecified <=1.70

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS: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.

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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-863Incorrect Authorization
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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