CVE-2007-4556

Estado: ModificadaMedia (6.8)—

Struts support in OpenSymphony XWork before 1.2.3, and 2.x before 2.0.4, as used in WebWork and Apache Struts, recursively evaluates all input as an Object-Graph Navigation Language (OGNL) expression when altSyntax is enabled, which allows remote attackers to cause a denial of service (infinite loop) or execute arbitrary code via form input beginning with a "%{" sequence and ending with a "}" character.

CVSS

Versión: 2.0
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Puntuación base: 6.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 26%
Percentil entre todas las CVEs puntuadas: 98
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 (1)

Opensymphony — Xwork

CWE

NVD-CWE-Other

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2007-4556",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": true,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2007-08-28T01:17:00.000",
  "references": [
    {
      "url": "http://forums.opensymphony.com/ann.jspa?annID=54",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
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    },
    {
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      "tags": [
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    },
    {
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      ],
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    },
    {
      "url": "http://jira.opensymphony.com/secure/ReleaseNote.jspa?projectId=10050&styleName=Html&version=21701",
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    },
    {
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      "tags": [
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    },
    {
      "url": "http://secunia.com/advisories/26681",
      "tags": [
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
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    },
    {
      "url": "http://jira.opensymphony.com/secure/ReleaseNote.jspa?projectId=10050&styleName=Html&version=21701",
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      "url": "http://jira.opensymphony.com/secure/ReleaseNote.jspa?projectId=10050&styleName=Html&version=21706",
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    },
    {
      "url": "http://osvdb.org/37072",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
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    },
    {
      "url": "http://secunia.com/advisories/26693",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/26694",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://struts.apache.org/2.x/docs/s2-001.html",
      "tags": [
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        "Third Party Advisory"
      ],
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    },
    {
      "url": "http://wiki.opensymphony.com/display/WW/1.2.3+Press+Release",
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    },
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      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/3042",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Struts support in OpenSymphony XWork before 1.2.3, and 2.x before 2.0.4, as used in WebWork and Apache Struts, recursively evaluates all input as an Object-Graph Navigation Language (OGNL) expression when altSyntax is enabled, which allows remote attackers to cause a denial of service (infinite loop) or execute arbitrary code via form input beginning with a \"%{\" sequence and ending with a \"}\" character."
    },
    {
      "lang": "es",
      "value": "Struts apoyado en OpenSymphony XWork anterior a  1.2.3, y 2.x anterior a 2.0.4, tal y como se utiliza en  WebWork y Apache Struts, recursivamente evalua todas las entradas como una expresión Object-Graph Navigation Language (OGNL) cuando altSyntax está activado, lo cual permite a atacantes remotos provocar denegación de servicio (bucle infinito) o ejecutar código de su elección a través de un formulario de entradad comenzando con una secuencia \"%{\" y finalizando con un caracter \"}\"."
    }
  ],
  "lastModified": "2026-06-16T22:44:19.150",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "F6AFB5F9-70BE-4524-8112-BBCD7AD23362",
              "versionEndExcluding": "1.2.3"
            },
            {
              "criteria": "cpe:2.3:a:opensymphony:xwork:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndIncluding": "2.0.4",
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          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "cve@mitre.org"
}