Vulnerability-Lookup

GHSA-3934-423W-4JQ3

Vulnerability from github – Published: 2026-05-12 21:31 – Updated: 2026-05-12 21:31

Details

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.

Severity ?

6.0 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N

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JSON

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  "affected": [],
  "aliases": [
    "CVE-2026-6959"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-12T20:16:46Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-3934-423w-4jq3",
  "modified": "2026-05-12T21:31:35Z",
  "published": "2026-05-12T21:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6959"
    },
    {
      "type": "WEB",
      "url": "https://discuss.hashicorp.com/t/hcsec-2026-14-nomad-arbitrary-file-read-write-on-client-host-through-symlink-attack/77416"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-6959 (GCVE-0-2026-6959)

Vulnerability from cvelistv5 – Published: 2026-05-12 18:59 – Updated: 2026-05-12 20:16

Title

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

Summary

Severity ?

6 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N

CWE

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

Assigner

HashiCorp

References

1 reference

URL	Tags
https://discuss.hashicorp.com/t/hcsec-2026-14-nom…

Impacted products

2 products

Vendor	Product	Version
HashiCorp	Nomad	Affected: 0.9.0 , < 2.0.1 (semver)
HashiCorp	Nomad Enterprise	Affected: 0.9.0 , < 2.0.1 (semver)

Credits

This issue was identified by Alex Manson (Aiven / NeuroWinter).

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JSON

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                "id": "CVE-2026-6959",
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T20:14:14.584948Z",
                "version": "2.0.3"
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        }
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      "source": {
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      "title": "Nomad vulnerable to arbitrary file read/write on client host through symlink attack"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3934-423W-4JQ3

CVE-2026-6959 (GCVE-0-2026-6959)

Tags

Sightings

Nomenclature