CVE-2020-7943Network attack vector

Sensitive information disclosure via network-exposed metrics API

Published Mar 11, 2020 · Updated Aug 4, 2024

Information disclosure in Puppet Enterprise, Puppet Server, and PuppetDB allows remote attackers to read sensitive metrics over the network. The trapperkeeper-metrics /v1 API accepts unauthenticated local-network requests and returns PuppetDB hostnames plus Puppet Server resource, function, and class names. Network reachability is sufficient in Puppet Enterprise before 2019.5.0, including 2018.1.x before 2018.1.13, Puppet Server before 5.3.12 or 6.9.2, and PuppetDB before 5.2.13 or 6.9.1.

CVSS severity7.5
High
EPSS probability7.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Puppet Enterprise, Puppet Server, and PuppetDB allows remote attackers to read sensitive metrics over the network. The trapperkeeper-metrics /v1 API accepts unauthenticated local-network requests and returns PuppetDB hostnames plus Puppet Server resource, function, and class names. Network reachability is sufficient in Puppet Enterprise before 2019.5.0, including 2018.1.x before 2018.1.13, Puppet Server before 5.3.12 or 6.9.2, and PuppetDB before 5.2.13 or 6.9.1.

The record

CVE
CVE-2020-7943
Published
Mar 11, 2020
Updated
Aug 4, 2024
Vendor
BlazeMeter
Product
Puppet Enterprise
Classifications
CWE-276, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 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=prior to 2018.1.13
  2. Affected versionversion=prior to 2019.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BlazeMeter · Puppet Enterpriseversion=prior to 2018.1.13; version=prior to 2019.5.0
BlazeMeter · Puppet Serverversion=prior to 5.3.12; version=prior to 6.9.2
BlazeMeter · PuppetDBversion=prior to 5.2.13; version=prior to 6.9.1

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/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-276Incorrect Default Permissions
T1190Exploit Public-Facing Application

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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