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CVE-2026-28406

Estado: ModificadaAlta (8.2)—

kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster. Starting in version 1.25.4 and prior to version 1.25.10, kaniko unpacks build context archives using `filepath.Join(dest, cleanedName)` without enforcing that the final path stays within `dest`. A tar entry like `../outside.txt` escapes the extraction root and writes files outside the destination directory. In environments with registry authentication, this can be chained with docker credential helpers to achieve code execution within the executor process. Version 1.25.10 uses securejoin for path resolution in tar extraction.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N, PR:N, UI:N (acceso remoto sin privilegios ni interacción) → T1190. Path traversal (CWE-22) en extracción de archivos permite leer/escribir fuera de destino; chaining con credential helpers permite ejecución de código en el proceso executor.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Chainguard — Kaniko

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-28406",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-28406",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-02T22:00:23.511380Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "security-advisories@github.com",
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          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 3.9
      },
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        "type": "Secondary",
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        "cvssData": {
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 3.1
      }
    ]
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      "source": "security-advisories@github.com",
      "affectedData": [
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          "vendor": "chainguard-forks",
          "product": "kaniko",
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              "version": ">= 1.25.4, < 1.25.10"
            }
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      "affectedData": [
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          ],
          "vendor": "Red Hat",
          "product": "OpenShift Serverless",
          "packageName": "openshift-serverless-1/kn-client-kn-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unknown"
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        {
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          "vendor": "Red Hat",
          "product": "OpenShift Serverless",
          "packageName": "openshift-serverless-1/kn-plugin-func-func-util-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unknown"
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          "vendor": "Red Hat",
          "product": "OpenShift Serverless",
          "packageName": "openshift-serverless-clients",
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          "defaultStatus": "unknown"
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      ]
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  ],
  "published": "2026-02-27T22:16:23.513",
  "references": [
    {
      "url": "https://github.com/chainguard-forks/kaniko/commit/a370e4b1f66e6e842b685c8f70ed507964c4b221",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/chainguard-forks/kaniko/pull/326",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-6rxq-q92g-4rmf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-28406",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2443462",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    },
    {
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28406.json",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster. Starting in version 1.25.4 and prior to version 1.25.10, kaniko unpacks build context archives using `filepath.Join(dest, cleanedName)` without enforcing that the final path stays within `dest`. A tar entry like `../outside.txt` escapes the extraction root and writes files outside the destination directory. In environments with registry authentication, this can be chained with docker credential helpers to achieve code execution within the executor process. Version 1.25.10 uses securejoin for path resolution in tar extraction."
    },
    {
      "lang": "es",
      "value": "kaniko es una herramienta para construir imágenes de contenedores a partir de un Dockerfile, dentro de un contenedor o un clúster de Kubernetes. A partir de la versión 1.25.4 y antes de la versión 1.25.10, kaniko descomprime archivos de contexto de construcción usando 'filepath.Join(dest, cleanedName)' sin asegurar que la ruta final permanezca dentro de 'dest'. Una entrada tar como '../outside.txt' escapa la raíz de extracción y escribe archivos fuera del directorio de destino. En entornos con autenticación de registro, esto puede encadenarse con los ayudantes de credenciales de docker para lograr la ejecución de código dentro del proceso del ejecutor. La versión 1.25.10 utiliza securejoin para la resolución de rutas en la extracción de tar."
    }
  ],
  "lastModified": "2026-07-15T02:19:14.720",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:chainguard:kaniko:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndExcluding": "1.25.10",
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            }
          ],
          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}