FKIE_CVE-2025-59342

Vulnerability from fkie_nvd - Published: 2025-09-17 18:15 - Updated: 2025-09-18 13:43
Severity ?
5.5 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Summary
esm.sh is a nobuild content delivery network(CDN) for modern web development. In 136 and earlier, a path-traversal flaw in the handling of the X-Zone-Id HTTP header allows an attacker to cause the application to write files outside the intended storage location. The header value is used to build a filesystem path but is not properly canonicalized or restricted to the application’s storage base directory. As a result, supplying ../ sequences in X-Zone-Id causes files to be written to arbitrary directories.
References
security-advisories@github.comhttps://github.com/esm-dev/esm.sh/blob/main/server/router.go#L116
security-advisories@github.comhttps://github.com/esm-dev/esm.sh/blob/main/server/router.go#L411
security-advisories@github.comhttps://github.com/esm-dev/esm.sh/security/advisories/GHSA-g2h5-cvvr-7gmw
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "esm.sh is a nobuild content delivery network(CDN) for modern web development. In 136 and earlier, a path-traversal flaw in the handling of the X-Zone-Id HTTP header allows an attacker to cause the application to write files outside the intended storage location. The header value is used to build a filesystem path but is not properly canonicalized or restricted to the application\u2019s storage base directory. As a result, supplying ../ sequences in X-Zone-Id causes files to be written to arbitrary directories."
    },
    {
      "lang": "es",
      "value": "esm.sh es una red de entrega de contenido (CDN) sin compilaci\u00f3n para el desarrollo web moderno. En 136 y anteriores, una falla de path traversal en el manejo del encabezado HTTP X-Zone-Id permite a un atacante hacer que la aplicaci\u00f3n escriba archivos fuera de la ubicaci\u00f3n de almacenamiento prevista. El valor del encabezado se utiliza para construir una ruta del sistema de archivos, pero no se canonicaliza correctamente ni se restringe al directorio base de almacenamiento de la aplicaci\u00f3n. Como resultado, suministrar secuencias ../ en X-Zone-Id hace que los archivos se escriban en directorios arbitrarios."
    }
  ],
  "id": "CVE-2025-59342",
  "lastModified": "2025-09-18T13:43:34.310",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-09-17T18:15:53.550",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/esm-dev/esm.sh/blob/main/server/router.go#L116"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/esm-dev/esm.sh/blob/main/server/router.go#L411"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/esm-dev/esm.sh/security/advisories/GHSA-g2h5-cvvr-7gmw"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-24"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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