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CVE-2026-23940

Estado: ModificadaAlta (7.1)—

Uncontrolled Resource Consumption vulnerability in hexpm hexpm/hexpm allows Excessive Allocation.

Publishing an oversized package can cause Hex.pm to run out of memory while extracting the uploaded package tarball. This can terminate the affected application instance and result in a denial of service for package publishing and potentially other package-processing functionality.

This issue affects hex.pm: before 2026-03-10.

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:L indica acceso remoto con privilegios (usuario autenticado), sugiriendo T1210. CWE-400 y descripción de consumo excesivo de recursos causa DoS por agotamiento de memoria (T1499.004).

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

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationFilter Network TrafficDisable or Remove Feature or Program

Tecnologías afectadas (1)

HEX — Hexpm

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-23940",
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          "options": [
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              "exploitation": "none"
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            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-03-16T17:06:18.779960Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
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        "type": "Secondary",
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        "cvssData": {
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          "version": "4.0",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  "affected": [
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      "affectedData": [
        {
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            "cpe:2.3:a:hexpm:hexpm:*:*:*:*:*:*:*:*"
          ],
          "vendor": "hexpm",
          "product": "hexpm",
          "versions": [
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              "version": "0",
              "lessThan": "2026-03-10",
              "versionType": "date"
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          ],
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          "collectionURL": "https://hex.pm",
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        },
        {
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          ],
          "repo": "https://github.com/hexpm/hexpm",
          "vendor": "hexpm",
          "product": "hexpm",
          "versions": [
            {
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              "version": "82911daf5f8fb2ab44f298e3ba22b90bc1ae3746",
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              "versionType": "git"
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          ],
          "packageURL": "pkg:github/hexpm/hexpm",
          "packageName": "hexpm/hexpm",
          "collectionURL": "https://github.com",
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  "published": "2026-03-13T19:54:14.640",
  "references": [
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      "url": "https://cna.erlef.org/cves/CVE-2026-23940.html",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/hexpm/hexpm/commit/495f01607d3eae4aed7ad09b2f54f31ec7a7df01",
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      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://github.com/hexpm/hexpm/security/advisories/GHSA-jp8w-gxf6-8hcr",
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        "Vendor Advisory"
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      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    },
    {
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-23940",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Uncontrolled Resource Consumption vulnerability in hexpm hexpm/hexpm allows Excessive Allocation.\n\nPublishing an oversized package can cause Hex.pm to run out of memory while extracting the uploaded package tarball. This can terminate the affected application instance and result in a denial of service for package publishing and potentially other package-processing functionality.\n\nThis issue affects hex.pm: before 2026-03-10."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de consumo de recursos no controlado en hexpm hexpm/hexpm permite una asignación excesiva. Publicar un paquete sobredimensionado puede hacer que Hex.pm se quede sin memoria mientras extrae el tarball del paquete subido. Esto puede terminar la instancia de aplicación afectada y resultar en una denegación de servicio para la publicación de paquetes y potencialmente otras funcionalidades de procesamiento de paquetes.\n\nEste problema afecta a hexpm: antes de 495f01607d3eae4aed7ad09b2f54f31ec7a7df01; hex.pm: antes del 2026-03-10."
    }
  ],
  "lastModified": "2026-09-08T14:17:21.340",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "2026-03-09"
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          "operator": "OR"
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  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
}