CVE-2020-2104Network attack vector

Memory usage disclosure via missing graph authorization

Published Jan 29, 2020 · Updated Aug 4, 2024

Incorrect authorization in Jenkins 2.218 and earlier and LTS 2.204.1 and earlier allows remote authenticated users to view JVM memory data. MemoryUsageMonitor.doGraph generates and returns the chart without checking Jenkins.ADMINISTER permission. Overall/Read access and network reachability are required; the exposed data is limited to controller JVM memory-use history.

CVSS severity4.3
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Jenkins 2.218 and earlier and LTS 2.204.1 and earlier allows remote authenticated users to view JVM memory data. MemoryUsageMonitor.doGraph generates and returns the chart without checking Jenkins.ADMINISTER permission. Overall/Read access and network reachability are required; the exposed data is limited to controller JVM memory-use history.

The record

CVE
CVE-2020-2104
Published
Jan 29, 2020
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
Jenkins
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 29, 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 <=2.218
  2. Affected versionversion=unspecified <=LTS 2.204.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Jenkinsversion=unspecified <=2.218; version=unspecified <=LTS 2.204.1

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

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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