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CVE-2022-23556

Estado: ModificadaAlta (7.5)—

CodeIgniter is a PHP full-stack web framework. This vulnerability may allow attackers to spoof their IP address when the server is behind a reverse proxy. This issue has been patched, please upgrade to version 4.2.11 or later, and configure `Config\App::$proxyIPs`. As a workaround, do not use `$request->getIPAddress()`.

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).

Tecnologías afectadas (1)

Codeigniter — Codeigniter

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-23556",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-23556",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-15T14:36:49.954898Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
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          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 2.2
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
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          "confidentialityImpact": "NONE"
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  "published": "2022-12-22T19:15:09.090",
  "references": [
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      "url": "https://github.com/codeigniter4/CodeIgniter4/commit/5ca8c99b2db09a2a08a013836628028ddc984659",
      "tags": [
        "Patch",
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    {
      "url": "https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-ghw3-5qvm-3mqc",
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      "url": "https://github.com/codeigniter4/CodeIgniter4/commit/5ca8c99b2db09a2a08a013836628028ddc984659",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "CodeIgniter is a PHP full-stack web framework. This vulnerability may allow attackers to spoof their IP address when the server is behind a reverse proxy. This issue has been patched, please upgrade to version 4.2.11 or later, and configure `Config\\App::$proxyIPs`. As a workaround, do not use `$request->getIPAddress()`.\n"
    },
    {
      "lang": "es",
      "value": "CodeIgniter es un framework web PHP de full-stack. Esta vulnerabilidad puede permitir a los atacantes falsificar su dirección IP cuando el servidor está detrás de un proxy inverso. Este problema ha sido solucionado, actualice a la versión 4.2.11 o posterior y configure `Config\\App::$proxyIPs`. Como solución alternativa, no utilice `$request-&gt;getIPAddress()`."
    }
  ],
  "lastModified": "2026-06-17T04:30:20.987",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "4.2.11",
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            }
          ],
          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}