CVE-2021-43415

Improper Authentication in HashiCorp Nomad

8.8 HighFix available

HashiCorp Nomad and Nomad Enterprise up to 1.0.13, 1.1.7, and 1.2.0, with the QEMU task driver enabled, allowed authenticated users with job submission capabilities to bypass the configured allowed image paths. Fixed in 1.0.14, 1.1.8, and 1.2.1.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.22%Up 0.6 points since Dec 4, 2021

What each source reports

NVD Score used 8.8

Record: CVE-2021-43415
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 6.0 MediumAV:N/AC:M/Au:S/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-43415
Updated: 2026-11-02

EUVDEUVD-2021-2424 No score

Record: EUVD-2021-2424
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2jhh-5xm2-j4gf 8.8

Improper Authentication in HashiCorp Nomad

Record: GHSA-2jhh-5xm2-j4gf
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-287
Updated: 2026-11-02

OSVALPINE-CVE-2021-43415 8.8

Record: ALPINE-CVE-2021-43415
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

OSV 8.8

Record: CVE-2021-43415
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-2jhh-5xm2-j4gf 8.8

Improper Authentication in HashiCorp Nomad

Record: GHSA-2jhh-5xm2-j4gf
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-287
Updated: 2026-11-02

OSVUBUNTU-CVE-2021-43415 8.8

Record: UBUNTU-CVE-2021-43415
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGO-2022-0573 No score

Improper Authentication in HashiCorp Nomad in github.com/hashicorp/nomad

Improper Authentication in HashiCorp Nomad in github.com/hashicorp/nomad

Record: GO-2022-0573
Updated: 2026-11-02

Affected products

hashicorp nomad

Affected packages

Affected packages
Package	Affected	Fixed
`github.com/hashicorp/nomad` Go	before 1.0.14	1.0.14
`github.com/hashicorp/nomad` Go	1.1.0 up to 1.1.8	1.1.8
`github.com/hashicorp/nomad` Go	1.2.0 up to 1.2.1	1.2.1
`nomad` Alpine:v3.16	1.0.0 up to 1.2.6-r0	1.2.6-r0
`nomad` Alpine:v3.17	1.0.0 up to 1.2.6-r0	1.2.6-r0
`nomad` Alpine:v3.18	1.0.0 up to 1.2.6-r0	1.2.6-r0
`github.com/hashicorp/nomad` Go	before 1.0.14, 1.1.0 up to 1.1.8, 1.2.0 up to 1.2.1	1.0.141.1.81.2.1
`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 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2021-43415 is a high vulnerability (CVSS 8.8) in Hashicorp Nomad, published December 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.22%, the 68th percentile. Fixed in github.com/hashicorp/nomad 1.0.14.