CVE-2026-14891: CWE-59: Improper Link Resolution Before File Access (Link Following) in HashiCorp Nomad
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.
AI Analysis
Technical Summary
CVE-2026-14891 is an improper link resolution vulnerability (CWE-59) in HashiCorp Nomad's Docker task driver. It allows a job submitter to circumvent volume bind mount restrictions by bind-mounting host paths into containers, potentially escaping the sandbox and accessing host files. This vulnerability affects Nomad versions from 0.4.1 up to but not including 2.0.4. The vulnerability is addressed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14.
Potential Impact
An attacker with job submission privileges can exploit this vulnerability to bind-mount arbitrary host paths into containers despite volume bind mounts being disabled. This can lead to unauthorized reading and writing of files on the host system, resulting in a complete compromise of confidentiality and integrity of host data. Availability impact is not indicated.
Mitigation Recommendations
A fix is available in Nomad Community Edition 2.0.4 and Nomad Enterprise versions 2.0.4, 1.11.8, and 1.10.14. Users should upgrade to these versions or later to remediate this vulnerability. No vendor advisory content is provided to indicate alternative mitigations or temporary fixes.
CVE-2026-14891: CWE-59: Improper Link Resolution Before File Access (Link Following) in HashiCorp Nomad
Description
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.
CVSS v3.1
Score 8.7high
Affected software
pkg:github/Nomad EnterpriseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-14891 is an improper link resolution vulnerability (CWE-59) in HashiCorp Nomad's Docker task driver. It allows a job submitter to circumvent volume bind mount restrictions by bind-mounting host paths into containers, potentially escaping the sandbox and accessing host files. This vulnerability affects Nomad versions from 0.4.1 up to but not including 2.0.4. The vulnerability is addressed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14.
Potential Impact
An attacker with job submission privileges can exploit this vulnerability to bind-mount arbitrary host paths into containers despite volume bind mounts being disabled. This can lead to unauthorized reading and writing of files on the host system, resulting in a complete compromise of confidentiality and integrity of host data. Availability impact is not indicated.
Mitigation Recommendations
A fix is available in Nomad Community Edition 2.0.4 and Nomad Enterprise versions 2.0.4, 1.11.8, and 1.10.14. Users should upgrade to these versions or later to remediate this vulnerability. No vendor advisory content is provided to indicate alternative mitigations or temporary fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-07-06T18:05:48.932Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4eafe7c9d9e3dbe3adea00
Added to database: 07/08/2026, 20:15:35 UTC
Last enriched: 07/08/2026, 20:28:37 UTC
Last updated: 07/08/2026, 22:43:39 UTC
Views: 3
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