CVE-2026-6959: Nomad vulnerable to arbitrary file read/write on client host through symlink attack

Q: What is the severity of CVE-2026-6959?

CVE-2026-6959 is classified as a critical vulnerability due to its potential for arbitrary file read and write on client hosts.

Q: How do I fix CVE-2026-6959?

To fix CVE-2026-6959, upgrade HashiCorp Nomad and Nomad Enterprise to version 2.0.1 or later.

Q: Who is affected by CVE-2026-6959?

CVE-2026-6959 affects users of HashiCorp Nomad and Nomad Enterprise versions prior to 2.0.1.

Q: What kind of attack does CVE-2026-6959 enable?

CVE-2026-6959 enables attackers to perform a symlink attack allowing arbitrary file read and write operations.

Q: What underlying component of HashiCorp Nomad is involved in CVE-2026-6959?

CVE-2026-6959 involves the Nomad process user, which is vulnerable due to insufficient symlink handling.

Published May 12, 2026

Updated

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.

Affected Software

2 affected components

HashiCorp Nomad<2.0.1, <1.11.5, <1.10.11

HashiCorp Nomad Enterprise<2.0.1, <1.11.5, <1.10.11

Event History

May 12, 2026

CVE Published

via MITRE·06:59 PM

Data Sourced

via MITRE·06:59 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·08:16 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2026-6959?

CVE-2026-6959 is classified as a critical vulnerability due to its potential for arbitrary file read and write on client hosts.

How do I fix CVE-2026-6959?

To fix CVE-2026-6959, upgrade HashiCorp Nomad and Nomad Enterprise to version 2.0.1 or later.

Who is affected by CVE-2026-6959?

CVE-2026-6959 affects users of HashiCorp Nomad and Nomad Enterprise versions prior to 2.0.1.

What kind of attack does CVE-2026-6959 enable?

CVE-2026-6959 enables attackers to perform a symlink attack allowing arbitrary file read and write operations.

What underlying component of HashiCorp Nomad is involved in CVE-2026-6959?

CVE-2026-6959 involves the Nomad process user, which is vulnerable due to insufficient symlink handling.

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