CVE-2026-14891

Nomad vulnerable to sandbox escape in Docker task driver

8.7 High

HashiCorp Nomad and Nomad Enterprise are vulnerable to a sandbox escape in the Docker task driver that may allow a job submitter to bind-mount a host path into a container even when volume bind mounts are disabled, potentially leading to reading and writing files on the host. This vulnerability, CVE-2026-14891, is fixed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.49%Up 0.2 points since Jul 9, 2026

What each source reports

CVE List Score used 8.7

Nomad vulnerable to sandbox escape in Docker task driver

Record: CVE-2026-14891
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-59
Updated: 2026-11-02

EUVDEUVD-2026-42345 8.7

Record: EUVD-2026-42345
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5c56-jfhx-4gcm 8.7

HashiCorp Nomad and Nomad Enterprise are vulnerable to a sandbox escape in the Docker task driver...

Record: GHSA-5c56-jfhx-4gcm
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-59
Updated: 2026-11-02

NVD 8.7

Record: CVE-2026-14891
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-59
Updated: 2026-11-02

OSV 8.7

Nomad vulnerable to sandbox escape in Docker task driver

Record: CVE-2026-14891
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-59
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-14891 8.7

Record: UBUNTU-CVE-2026-14891
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Updated: 2026-11-06

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`nomad` Ubuntu:20.04:LTS	All versions, plus listed versions 0.8.7+dfsg1-1ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts	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-2026-14891 is a high vulnerability (CVSS 8.7) in Hashicorp Nomad, published July 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.