Vulnerability · Published May 12, 2026 · Assigned by HashiCorp
CVE-2026-6959Nomad vulnerable to arbitrary file read/write on client host through symlink attack
Medium 6.0
In plain English
A medium-severity security flaw in Nomad from HashiCorp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.0Medium
Exploit odds (30 days)0.2%top 93.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/hashicorp/nomad | 1.11.0-rc.1.0.20260512123500-2a09fd62c238 | GHSA-3934-423w-4jq3 |
| Go | github.com/hashicorp/nomad | 1.11.0-rc.1.0.20260512123500-2a09fd62c238 | GO-2026-5076 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HashiCorp | Nomad | 0.9.0 – before 2.0.1 |
| HashiCorp | Nomad Enterprise | 0.9.0 – before 2.0.1 |
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N