CVE-2019-14802

Hashicorp Nomad Information Exposure Through Environmental Variables

5.3 MediumFix available

HashiCorp Nomad 0.5.0 through 0.9.4 (fixed in 0.9.5) reveals unintended environment variables to the rendering task during template rendering, aka GHSA-6hv3-7c34-4hx8. This applies to nomad/client/allocrunner/taskrunner/template.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.63%Down 0.3 points since Dec 27, 2022

What each source reports

NVD Score used 5.3

Record: CVE-2019-14802
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

CVE List 5.3

Record: CVE-2019-14802
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

EUVDEUVD-2022-0861 5.3

Record: EUVD-2022-0861
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-6hv3-7c34-4hx8 5.3

Hashicorp Nomad Information Exposure Through Environmental Variables

In Nomad before version 0.9.5, when rendering a task template, all environment variables were available to the rendering task. As a fix, only task environment variables are used.

Record: GHSA-6hv3-7c34-4hx8
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200, CWE-526
Updated: 2026-11-02

OSVALPINE-CVE-2019-14802 5.3

Record: ALPINE-CVE-2019-14802
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-03

OSV 5.3

Record: CVE-2019-14802
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

OSVGHSA-6hv3-7c34-4hx8 5.3

Hashicorp Nomad Information Exposure Through Environmental Variables

In Nomad before version 0.9.5, when rendering a task template, all environment variables were available to the rendering task. As a fix, only task environment variables are used.

Record: GHSA-6hv3-7c34-4hx8
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200, CWE-526
Updated: 2026-11-02

OSVUBUNTU-CVE-2019-14802 5.3

Record: UBUNTU-CVE-2019-14802
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

OSVGO-2022-0634 No score

Hashicorp Nomad Information Exposure Through Environmental Variables in github.com/hashicorp/nomad

Hashicorp Nomad Information Exposure Through Environmental Variables in github.com/hashicorp/nomad

Record: GO-2022-0634
Updated: 2026-11-02

Affected products

hashicorp nomad

Affected packages

Affected packages
Package	Affected	Fixed
`github.com/hashicorp/nomad` Go	before 0.9.5	0.9.5
`nomad` Alpine:v3.13	0.5.0 up to 0.9.5-r0	0.9.5-r0
`nomad` Alpine:v3.14	0.5.0 up to 0.9.5-r0	0.9.5-r0
`nomad` Alpine:v3.15	0.5.0 up to 0.9.5-r0	0.9.5-r0
`nomad` Alpine:v3.16	0.5.0 up to 0.9.5-r0	0.9.5-r0
`nomad` Alpine:v3.17	0.5.0 up to 0.9.5-r0	0.9.5-r0
`nomad` Alpine:v3.18	0.5.0 up to 0.9.5-r0	0.9.5-r0
`nomad` Ubuntu:18.04:LTS	All versions, plus listed versions 0.4.0+dfsg-1	None known
`nomad` Ubuntu:20.04:LTS	All versions, plus listed versions 0.8.7+dfsg1-1ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected, aliases, references	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-14802 is a medium vulnerability (CVSS 5.3) in Hashicorp Nomad, published February 15, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.63%, the 50th percentile. Fixed in github.com/hashicorp/nomad 0.9.5.

References

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