FKIE_CVE-2026-64679

Vulnerability from fkie_nvd - Published: 2026-08-21 21:17 - Updated: 2026-10-12 16:10
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Summary
Atlantis is a self-hosted golang application that listens for Terraform pull request events via webhooks. From 0.19.8 until 0.45.0, Atlantis does not consistently validate user-controlled workspace values supplied through accepted repository-level atlantis.yaml configuration or authenticated /api/plan input before joining them into local workspace paths. Traversal segments can escape the intended per-pull workspace directory and cause clone preparation or other working-directory code paths to call os.RemoveAll, os.MkdirAll, or related filesystem operations on out-of-bounds directories before Terraform rejects the invalid workspace name. This can create, delete, or reuse writable paths with the privileges of the Atlantis process, causing integrity loss or denial of service. This issue is fixed in version 0.45.0.
References
security-advisories@github.comhttps://github.com/runatlantis/atlantis/commit/ea4e4ceebf8b387d015fff7ed8a7fcca33279afe
security-advisories@github.comhttps://github.com/runatlantis/atlantis/pull/6254
security-advisories@github.comhttps://github.com/runatlantis/atlantis/releases/tag/v0.45.0
security-advisories@github.comhttps://github.com/runatlantis/atlantis/security/advisories/GHSA-26w5-6g95-gj28
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/runatlantis/atlantis/security/advisories/GHSA-26w5-6g95-gj28
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "atlantis",
          "vendor": "runatlantis",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.19.8, \u003c 0.45.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Atlantis is a self-hosted golang application that listens for Terraform pull request events via webhooks. From 0.19.8 until 0.45.0, Atlantis does not consistently validate user-controlled workspace values supplied through accepted repository-level atlantis.yaml configuration or authenticated /api/plan input before joining them into local workspace paths. Traversal segments can escape the intended per-pull workspace directory and cause clone preparation or other working-directory code paths to call os.RemoveAll, os.MkdirAll, or related filesystem operations on out-of-bounds directories before Terraform rejects the invalid workspace name. This can create, delete, or reuse writable paths with the privileges of the Atlantis process, causing integrity loss or denial of service. This issue is fixed in version 0.45.0."
    },
    {
      "lang": "es",
      "value": "Atlantis es una aplicaci\u00f3n golang autoalojada que escucha eventos de pull request de Terraform a trav\u00e9s de webhooks. Desde la versi\u00f3n 0.19.8 hasta la 0.45.0, Atlantis no valida consistentemente los valores de espacio de trabajo controlados por el usuario proporcionados a trav\u00e9s de la configuraci\u00f3n atlantis.yaml aceptada a nivel de repositorio o la entrada autenticada de /API/plan antes de unirlos en rutas de espacio de trabajo locales. Los segmentos de recorrido pueden escapar del directorio de espacio de trabajo previsto por pull y causar que la preparaci\u00f3n de clonaci\u00f3n u otras rutas de c\u00f3digo de directorio de trabajo llamen a os.RemoveAll, os.MkdirAll o a operaciones de sistema de archivos relacionadas en directorios fuera de los l\u00edmites antes de que Terraform rechace el nombre de espacio de trabajo no v\u00e1lido. Esto puede crear, eliminar o reutilizar rutas escribibles con los privilegios del proceso de Atlantis, causando p\u00e9rdida de integridad o denegaci\u00f3n de servicio. Este problema est\u00e1 solucionado en la versi\u00f3n 0.45.0."
    }
  ],
  "id": "CVE-2026-64679",
  "lastModified": "2026-10-12T16:10:00.220",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-64679",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-25T17:04:45.481426Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-21T21:17:01.920",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/runatlantis/atlantis/commit/ea4e4ceebf8b387d015fff7ed8a7fcca33279afe"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/runatlantis/atlantis/pull/6254"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/runatlantis/atlantis/releases/tag/v0.45.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/runatlantis/atlantis/security/advisories/GHSA-26w5-6g95-gj28"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/runatlantis/atlantis/security/advisories/GHSA-26w5-6g95-gj28"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-73"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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