Nomad vulnerable to arbitrary file read/write on client host through symlink attack
Priority LOW 26CWE-59Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00169 6th percentileScored 2026-11-07
Fix Fixed Nomad (HashiCorp): 2.0.1Nomad Enterprise (HashiCorp): 2.0.1+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HashiCorp | Nomad | 0.9.0 to before 2.0.1 | 2.0.1 | Patch available | CNA |
| HashiCorp | Nomad Enterprise | 0.9.0 to before 2.0.1 | 2.0.1 | Patch available | CNA |
| — | github.com/hashicorp/nomad (Go) | before 1.11.0-rc.1.0.20260512123500-2a09fd62c238 | 1.11.0-rc.1.0.20260512123500-2a09fd62c238 | Patch available | GHSA-3934-423w-4jq3 |
- Nomad VendorHashiCorp Affected 0.9.0 to before 2.0.1 Fixed in 2.0.1 Patch available CNA
- Nomad Enterprise VendorHashiCorp Affected 0.9.0 to before 2.0.1 Fixed in 2.0.1 Patch available CNA
- github.com/hashicorp/nomad (Go) Vendor— Affected before 1.11.0-rc.1.0.20260512123500-2a09fd62c238 Fixed in 1.11.0-rc.1.0.20260512123500-2a09fd62c238 Patch available GHSA-3934-423w-4jq3
Remediation
- Fix · CNA Nomad (HashiCorp) Fixed in 2.0.1
- Fix · CNA Nomad Enterprise (HashiCorp) Fixed in 2.0.1
- Fix · GHSA-3934-423w-4jq3 github.com/hashicorp/nomad (Go) Fixed in 1.11.0-rc.1.0.20260512123500-2a09fd62c238 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
HashiCorp Nomad, Nomad Enterprise 2.0.1
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-06570 Nomad vulnerable to path traversal in dynamic host volume which may lead to code executionPriority MEDIUM 51
Timeline
- 2026-10-02 Threatist record created from CVE-2026-6959
- 2026-10-03 Alias added: GHSA-3934-423w-4jq3
References
More HashiCorp vulnerabilities
- TI-2024-01904 Vault Cert Auth Method Did Not Correctly Validate Non-CA Certificates CVSS 3.1CRITICAL 9.8
- TI-2021-18437 HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4… CVSS 3.1HIGH 8.8
- TI-2026-06570 Nomad vulnerable to path traversal in dynamic host volume which may lead to code execution CVSS 3.1HIGH 8.8
- TI-2020-17753 The official Consul Docker images 0.7.1 through 1.4.2 contain a blank password for a root… CVSS 3.1CRITICAL 9.8
- TI-2026-13641 consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode CVSS 3.1CRITICAL 10.0
- TI-2026-13778 terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode CVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-6959 · CVE Program
- CVE-2026-6959 · NVD
- FIRST EPSS
- GHSA-3934-423w-4jq3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences