CVE-2026-6959 json
Nomad vulnerable to arbitrary file read/write on client host through symlink attack
published 2026-05-12 5 mo ago modified 2026-10-26 13 d ago also GHSA-3934-423w-4jq3 , GO-2026-5076 , EUVD-2026-29825
- cvss
- 6.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 6%
- public exploits
- 0
- none known
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.
Patch / fix
- go github.com/hashicorp/nomad 1.11.0-rc.1.0.20260512123500-2a09fd62c238
- HashiCorp Nomad 2.0.1
- HashiCorp Nomad Enterprise 1.10.11, 1.11.5, 2.0.1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N |
| GitHub | 3.1 | 6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/hashicorp/nomad | <1.11.0-rc.1.0.20260512123500-2a09fd62c238 |
1.11.0-rc.1.0.20260512123500-2a09fd62c238 |
Affected products
- HashiCorp Nomad
- HashiCorp Nomad Enterprise
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
github.com
/hashicorp/nomad/commit/2a09fd62c23880ff306499ae03fe64628d82a23f
web, patch
-
discuss.hashicorp.com
/t/hcsec-2026-14-nomad-arbitrary-file-read-write-on-client-host-through-symlink-attack/77416
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-6959
advisory
-
github.com
/hashicorp/nomad
package
-
github.com
/hashicorp/nomad/releases/tag/v2.0.1
web
-
github.com
/advisories/GHSA-3934-423w-4jq3
advisory
Sources
- CVE List CVE-2026-6959
- GitHub Advisory GHSA-3934-423w-4jq3
- NVD CVE-2026-6959
- OSV GO-2026-5076
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