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CVE-2026-7568

Estado: ModificadaMedia (6.3)—

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.

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)

PHP — PHP

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-7568",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-05-11T13:25:08.120406Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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          "vulnerabilityResponseEffort": "LOW",
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          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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          "cpes": [
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          ],
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          "product": "Red Hat Enterprise Linux 7",
          "packageName": "php",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:hummingbird:1"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Hardened Images",
          "packageName": "php",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        }
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  "published": "2026-05-10T05:16:11.920",
  "references": [
    {
      "url": "https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57",
      "tags": [
        "Vendor Advisory"
      ],
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@php.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-190"
        }
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      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "description": [
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          "value": "CWE-190"
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      "lang": "en",
      "value": "In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process."
    },
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      "lang": "es",
      "value": "En las versiones de PHP 8.2.* anteriores a la 8.2.31, 8.3.* anteriores a la 8.3.31, 8.4.* anteriores a la 8.4.21, y 8.5.* anteriores a la 8.5.6, la función metaphone() en ext/standard/metaphone.c utiliza una variable de tipo entero con signo para rastrear la posición actual dentro de la cadena de entrada. Si se pasa una cadena de más de 2.147.483.647 bytes, se produce un desbordamiento de entero con signo, lo que resulta en un comportamiento indefinido. Esto puede llevar a una lectura fuera de límites, causando un fallo de segmentación o acceso a memoria no relacionada, y puede afectar la disponibilidad del proceso de PHP."
    }
  ],
  "lastModified": "2026-07-24T08:10:00.150",
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