CVE-2019-14802Network attack vector

Host environment disclosure via consul-template fallback

Published Dec 26, 2022 · Updated Apr 14, 2025

Information exposure in HashiCorp Nomad 0.5.0 through 0.9.4 allows remote attackers to read host environment variables through task templates. In client/allocrunner/taskrunner/template, templateRunner supplied task variables without masking the Nomad client process environment, so consul-template resolved missing names from the host process. Exploitation requires permission to submit a job containing a template stanza, and disclosure is limited to variables present in the client process environment.

CVSS severity5.3
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in HashiCorp Nomad 0.5.0 through 0.9.4 allows remote attackers to read host environment variables through task templates. In client/allocrunner/taskrunner/template, templateRunner supplied task variables without masking the Nomad client process environment, so consul-template resolved missing names from the host process. Exploitation requires permission to submit a job containing a template stanza, and disclosure is limited to variables present in the client process environment.

The record

CVE
CVE-2019-14802
Published
Dec 26, 2022
Updated
Apr 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-526, CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3GitHub Advisory DatabaseCVSS: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-526Cleartext Storage of Sensitive Information in an Environment Variable
CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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