CVE-2026-42586

{
  "id": "CVE-2026-42586",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-13T19:17:24.323",
  "lastModified": "2026-10-26T17:10:03.270",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the Netty Redis codec encoder (RedisEncoder) writes user-controlled string content directly to the network output buffer without validating or sanitizing CRLF (\\r\\n) characters. Since the Redis Serialization Protocol (RESP) uses CRLF as the command/response delimiter, an attacker who can control the content of a Redis message can inject arbitrary Redis commands or forge fake responses. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final."
    },
    {
      "lang": "es",
      "value": "Netty es un framework de aplicación de red asíncrono y basado en eventos. Antes de 4.2.13.Final y 4.1.133.Final, el codificador de códec de Redis de Netty (RedisEncoder) escribe contenido de cadena controlado por el usuario directamente en el búfer de salida de red sin validar o sanear los caracteres CRLF (\\r\\n). Dado que el Protocolo de Serialización de Redis (RESP) usa CRLF como delimitador de comando/respuesta, un atacante que puede controlar el contenido de un mensaje de Redis puede inyectar comandos de Redis arbitrarios o falsificar respuestas falsas. Esta vulnerabilidad está corregida en 4.2.13.Final y 4.1.133.Final."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "netty",
          "product": "netty",
          "versions": [
            {
              "version": ">= 4.2.0.Alpha1, < 4.2.13.Final",
              "status": "affected"
            },
            {
              "version": "< 4.1.133.Final",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "io.netty",
          "product": "netty-codec-redis",
          "versions": [
            {
              "version": ">= 4.2.0.Alpha1, < 4.2.13.Final",
              "status": "affected"
            },
            {
              "version": "< 4.1.133.Final",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
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        "source": "[email protected]",
        "type": "Secondary",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 4.2
      },
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
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          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
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        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-14T18:17:18.157220Z",
          "id": "CVE-2026-42586",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
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          "role": "CISA Coordinator",
          "version": "2.0.3"
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  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-93"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
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          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
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  "references": [
    {
      "url": "https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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}