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.
CVE-2026-14891
Score 8.7 from GitHub Security Advisory (severity: HIGH) published 2026-07-08. a secondary CVSS source baseline 8.7; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.7
- EG Score
- 8.7(high)
- EPSS
- 23.6%
- KEV
- Not listed
Published
July 8, 2026
Last Modified
July 9, 2026
Advisory Details (1)
Auto-updated Jul 8, 2026HCSEC-2026-21 - Nomad vulnerable to sandbox escape in Docker task driver - Security - HashiCorp Discuss
https://discuss.hashicorp.com/t/hcsec-2026-21-nomad-vulnerable-to-sandbox-escape-in-docker-task-driver/77561Vendor Advisories for CVE-2026-14891(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 23× in last 7d / 23× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 21:52 UTCEG score recompute
- 2026-07-12 21:52 UTCGHSA enrichment
- 2026-07-12 11:02 UTCEG score recompute
- 2026-07-12 11:01 UTCGHSA enrichment
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-12 00:11 UTCEG score recompute
- 2026-07-12 00:11 UTCGHSA enrichment
- 2026-07-11 13:19 UTCEG score recompute
- 2026-07-11 13:19 UTCGHSA enrichment
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 02:29 UTCEG score recompute
- 2026-07-11 02:29 UTCGHSA enrichment
- 2026-07-10 15:39 UTCEG score recompute
- 2026-07-10 15:39 UTCGHSA enrichment
- 2026-07-10 04:48 UTCEG score recompute
- 2026-07-10 04:48 UTCGHSA enrichment
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-09 17:57 UTCEG score recompute
- 2026-07-09 17:57 UTCGHSA enrichment
- 2026-07-09 07:06 UTCEG score recompute
- 2026-07-09 07:06 UTCGHSA enrichment
- 2026-07-08 20:16 UTCEG score recompute
- 2026-07-08 20:14 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-14891?
When was CVE-2026-14891 disclosed?
Is CVE-2026-14891 actively exploited?
What is the CVSS score of CVE-2026-14891?
How do I remediate CVE-2026-14891?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-14891
Is Your Infrastructure Affected by CVE-2026-14891?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.