CVE-2020-2143Network attack vector

Credential exposure via plaintext configuration form

Published Mar 9, 2020 · Updated Aug 4, 2024

Cleartext credential transmission in Jenkins Logstash Plugin 2.3.1 and earlier allows context-dependent attackers to obtain configured secrets. The plugin places encrypted-at-rest credentials into the global Jenkins configuration form as plaintext rather than retaining their encrypted representation. Exposure requires an administrator to load that form while a browser extension, cross-site scripting flaw, or similar browser-side observer can read it.

CVSS severity5.3
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential transmission in Jenkins Logstash Plugin 2.3.1 and earlier allows context-dependent attackers to obtain configured secrets. The plugin places encrypted-at-rest credentials into the global Jenkins configuration form as plaintext rather than retaining their encrypted representation. Exposure requires an administrator to load that form while a browser extension, cross-site scripting flaw, or similar browser-side observer can read it.

The record

CVE
CVE-2020-2143
Published
Mar 9, 2020
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
Jenkins Logstash Plugin
Classifications
CWE-319
Attack vector
network
Privileges
unauthenticated

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 <=2.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Jenkins Logstash Pluginversion=unspecified <=2.3.1

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information

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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