CVE-2026-6959

Nomad vulnerable to arbitrary file read/write on client host through symlink attack

State: Published
Severity: 6.0 Medium
Published: May 12, 2026
Updated: May 12, 2026
Reserved: Apr 24, 2026

Description

HashiCorp Nomad and Nomad Enterprise prior to 2.0.1 are vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-6959) is fixed in Nomad 2.0.1, 1.11.5 and 1.10.11.

Scores

CVSS	Score	Vector	Source
3.1	6.0 Medium	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N	HashiCorp

Weaknesses

CWE-59 Improper Link Resolution Before File Access (Link Following)

Affected Products

Product	Versions
NomadHashiCorp	0.9.0 to before 2.0.1Affected
Nomad EnterpriseHashiCorp	0.9.0 to before 2.0.1Affectedfrom 1.11.5Not affectedfrom 1.10.11Not affected

References

https://discuss.hashicorp.com/t/hcsec-2026-14-nomad-arbitrary-file-read-write-on-client-host-through-symlink-attack/77416

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