CVE-2026-48596

Estado: ModificadaBaja (2.1)—

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in elixir-tesla tesla allows HTTP header injection via Tesla.Multipart.add_content_type_param/2.

Tesla.Multipart.add_content_type_param/2 appends caller-supplied strings to the multipart content_type_params list without validating for CR (\r) or LF (\n) characters. Tesla.Multipart.headers/1 then joins these params verbatim with "; " to construct the outgoing Content-Type header value. A param containing \r\n splits the header line, allowing arbitrary headers to be injected into the outbound HTTP request. Any application that forwards untrusted input (such as a user-supplied charset or parameter string) into add_content_type_param/2 is affected.

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This issue affects tesla: from 0.8.0 before 1.18.3.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/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
Puntuación base: 2.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.35%
Percentil entre todas las CVEs puntuadas: 26
Fecha de la puntuación: 4/10/2026

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).

Tecnologías afectadas (1)

Elixir-tesla — Tesla

CWE

CWE-113

Referencias

JSON original (NVD)

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  "id": "CVE-2026-48596",
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          "options": [
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              "exploitation": "poc"
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              "automatable": "no"
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          "version": "2.0.3",
          "timestamp": "2026-06-03T13:01:48.568462Z"
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          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
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          "userInteraction": "NONE",
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          "version": "4.0",
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          "valueDensity": "NOT_DEFINED",
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          "integrityRequirement": "NOT_DEFINED",
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          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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          "vendor": "elixir-tesla",
          "modules": [
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          "product": "tesla",
          "versions": [
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          "packageURL": "pkg:hex/tesla",
          "packageName": "tesla",
          "programFiles": [
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          ],
          "collectionURL": "https://repo.hex.pm",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "'Elixir.Tesla.Multipart':add_content_type_param/2"
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          "collectionURL": "https://github.com",
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          "programRoutines": [
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              "name": "'Elixir.Tesla.Multipart':add_content_type_param/2"
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  "published": "2026-06-02T20:16:38.557",
  "references": [
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      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
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      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "description": [
        {
          "lang": "en",
          "value": "CWE-113"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in elixir-tesla tesla allows HTTP header injection via Tesla.Multipart.add_content_type_param/2.\n\nTesla.Multipart.add_content_type_param/2 appends caller-supplied strings to the multipart content_type_params list without validating for CR (\\r) or LF (\\n) characters. Tesla.Multipart.headers/1 then joins these params verbatim with \"; \" to construct the outgoing Content-Type header value. A param containing \\r\\n splits the header line, allowing arbitrary headers to be injected into the outbound HTTP request. Any application that forwards untrusted input (such as a user-supplied charset or parameter string) into add_content_type_param/2 is affected.\n\nThis issue affects tesla: from 0.8.0 before 1.18.3."
    },
    {
      "lang": "es",
      "value": "La vulnerabilidad de Neutralización Inadecuada de Secuencias CRLF en Encabezados HTTP ('División de Solicitud/Respuesta HTTP') en elixir-tesla tesla permite la inyección de encabezados HTTP a través de Tesla.Multipart.add_content_type_param/2.\n\nTesla.Multipart.add_content_type_param/2 añade cadenas proporcionadas por el llamador a la lista multipart content_type_params sin validar los caracteres CR (\\r) o LF (\\n). Tesla.Multipart.headers/1 luego une estos parámetros textualmente con '; ' para construir el valor del encabezado Content-Type saliente. Un parámetro que contiene \\r\\n divide la línea del encabezado, permitiendo que se inyecten encabezados arbitrarios en la solicitud HTTP saliente. Cualquier aplicación que reenvíe entrada no confiable (como un charset o una cadena de parámetro proporcionados por el usuario) a add_content_type_param/2 se ve afectada.\n\nEste problema afecta a tesla: desde 0.8.0 antes de 1.18.3."
    }
  ],
  "lastModified": "2026-09-24T21:17:13.370",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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              "versionEndExcluding": "1.18.3",
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  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
}