CVE-2009-2335

Estado: ModificadaMedia (5)—

WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior exists for "user convenience."

CVSS

Versión: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Puntuación base: 5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 85%
Percentil entre todas las CVEs puntuadas: 100
Fecha de la puntuación: 5/10/2026

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 (2)

Wordpress — Wordpress Wordpress — Wordpress MU

CWE

CWE-16

Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-2335",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
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      "affectedData": [
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  ],
  "published": "2009-07-10T21:00:00.203",
  "references": [
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  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-16"
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      "lang": "en",
      "value": "WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.  NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior exists for \"user convenience.\""
    },
    {
      "lang": "es",
      "value": "WordPress y WordPress MU anterior a v2.8.1 expone un comportamiento diferente para un intento fallido de acceso en función de si existe la cuenta de usuario, lo cual permite a atacantes remotos enumerar nombres de usuario válidos. NOTA: el proveedor informa de que cuestiona la importancia de esta incidencia, indicando que el comportamiento existe para conveniencia del usuario."
    }
  ],
  "lastModified": "2026-06-16T23:09:14.153",
  "configurations": [
    {
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}