CVE-2026-107347high8.4

Nomad dispatch payload writes can escape the allocation directory through symlinks

Impact

HashiCorp Nomad and Nomad Enterprise are vulnerable to symlink following during dispatch payload and executor log writes that may allow a malicious workload to modify files outside its allocation directory. When the client agent runs as root, this could lead to code execution as root on the client host. This vulnerability (CVE-2026-107347) is fixed in Nomad 2.1.1 and Nomad Enterprise 2.1.0, 1.11.12, and 1.10.18.

Source excerpt · HashiCorp

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

HashiCorp · HashiCorp

Nomad

1 range

HashiCorp version evidence

Platforms: 64 bit, 32 bit, x86, ARM, MacOS, Windows, Linux

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0.3.0 → before 2.1.1

semver versions

Other versions: unaffected

HashiCorp · HashiCorp

Nomad Enterprise

1 range

HashiCorp version evidence

Platforms: 64 bit, 32 bit, x86, ARM, MacOS, Windows, Linux

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0.3.0 → before 2.1.0

semver versions

From 1.10.18: unaffected

From 1.11.12: unaffected

Other versions: unaffected

Original source description

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance · not supplied

Weakness classification

Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-107347

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-59 ↗

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

HashiCorp

Contributing organizations · 2

HashiCorp

Assigning organization

2026-10-30

CISA-ADP

Additional data publisher

2026-10-30

What changed

Follow changes

CVE · CVE-2026-1073472026-10-30

Observed 2026-10-30T18:06:15.498Z · upstream updated 2026-10-30T17:19:16.677Z

Prioritization updated

before

[]

after

[
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-30T17:19:03.266866Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

CVE · CVE-2026-1073472026-10-30

Observed 2026-10-30T16:13:25.526Z · upstream updated 2026-10-30T14:10:12.255Z

Description revised

before

HashiCorp Nomad and Nomad Enterprise are vulnerable to symlink following during dispatch payload and executor log writes that may allow a malicious workload to modify files outside its allocation directory. When the client agent runs as root, this could lead to code execution as root on the client host. This vulnerability (CVE-2026-107347) is fixed in Nomad 2.1.0 and Nomad Enterprise 2.1.0, 1.11.12, and 1.10.18.

after

HashiCorp Nomad and Nomad Enterprise are vulnerable to symlink following during dispatch payload and executor log writes that may allow a malicious workload to modify files outside its allocation directory. When the client agent runs as root, this could lead to code execution as root on the client host. This vulnerability (CVE-2026-107347) is fixed in Nomad 2.1.1 and Nomad Enterprise 2.1.0, 1.11.12, and 1.10.18.

Product or version evidence changed

before

[
  {
    "vendor": "HashiCorp",
    "name": "Nomad",
    "platforms": [
      "64 bit",
      "32 bit",
      "x86",
      "ARM",
      "MacOS",
      "Windows",
      "Linux"
    ],
    "versions": [
      {
        "version": "0.3.0",
        "status": "affected",
        "lessThan": "2.1.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "HashiCorp",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-107347"
  },
  {
    "vendor": "HashiCorp",
    "name": "Nomad Enterprise",
    "platforms": [
      "64 bit",
      "32 bit",
      "x86",
      "ARM",
      "MacOS",
      "Windows",
      "Linux"
    ],
    "versions": [
      {
        "version": "0.3.0",
        "status": "affected",
        "lessThan": "2.1.0",
        "versionType": "semver",
        "changes": [
          {
            "at": "1.11.12",
            "status": "unaffected"
          },
          {
            "at": "1.10.18",
            "status": "unaffected"
          }
        ]
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "HashiCorp",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-107347"
  }
]

after

[
  {
    "vendor": "HashiCorp",
    "name": "Nomad",
    "platforms": [
      "64 bit",
      "32 bit",
      "x86",
      "ARM",
      "MacOS",
      "Windows",
      "Linux"
    ],
    "versions": [
      {
        "version": "0.3.0",
        "status": "affected",
        "lessThan": "2.1.1",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "HashiCorp",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-107347"
  },
  {
    "vendor": "HashiCorp",
    "name": "Nomad Enterprise",
    "platforms": [
      "64 bit",
      "32 bit",
      "x86",
      "ARM",
      "MacOS",
      "Windows",
      "Linux"
    ],
    "versions": [
      {
        "version": "0.3.0",
        "status": "affected",
        "lessThan": "2.1.0",
        "versionType": "semver",
        "changes": [
          {
            "at": "1.11.12",
            "status": "unaffected"
          },
          {
            "at": "1.10.18",
            "status": "unaffected"
          }
        ]
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "HashiCorp",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-107347"
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

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References

1 sources

discuss.hashicorp.com/t/hcsec-2026-52-nomad-dispatch-payload-writes-can-escape-the-allocation-directory-through-symlinks/77930

Source referenceHashiCorp

Priority and evidence

Not in CISA KEVNo package fix recorded

KEV coverage does not rule out exploitation.

KEV checked 31/10/2026, 04:05:31 UTC

HashiCorp · CVSS:3.1 · 8.4

Assessment vector

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

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: No EPSS estimate available in this record.

CISA-ADP · SSVC

CISA Coordinator · 2026-10-30

Exploitation: none
Automatable: no
Technical Impact: partial

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record details

Published: 29/10/2026, 18:10:08 UTC
Modified: 30/10/2026, 17:19:16 UTC
Last imported by cve.new: 30/10/2026, 18:06:15 UTC
Aliases: None recorded

Source evidence

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CVE CVE-2026-107347