CVE-2026-44594

{
  "id": "CVE-2026-44594",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-28T16:16:24.717",
  "lastModified": "2026-10-26T13:10:00.140",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "esm.sh is a no-build content delivery network (CDN) for web development. In 137 and earlier, a Local File Inclusion (LFI) vulnerability exists in the esbuild plugin's handling of the browser field in package.json. An attacker can publish an npm package that causes the server to read and return arbitrary files from the host filesystem during the build process."
    },
    {
      "lang": "es",
      "value": "esm.sh es una red de entrega de contenido (CDN) sin compilación para el desarrollo web. En la versión 137 y anteriores, existe una vulnerabilidad de inclusión local de ficheros (LFI) en el manejo del campo browser en package.json por parte del plugin de esbuild. Un atacante puede publicar un paquete npm que hace que el servidor lea y devuelva ficheros arbitrarios del sistema de ficheros del host durante el proceso de compilación."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "esm-dev",
          "product": "esm.sh",
          "versions": [
            {
              "version": "<= 137",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-28T15:31:13.584346Z",
          "id": "CVE-2026-44594",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/esm-dev/esm.sh/security/advisories/GHSA-rg65-45m7-hq57",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/esm-dev/esm.sh/security/advisories/GHSA-rg65-45m7-hq57",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}