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CVE-2018-7537

Estado: ModificadaMedia (5.3)—

An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.

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 (3)

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2018-7537",
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          "authentication": "NONE",
          "integrityImpact": "NONE",
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          "confidentialityImpact": "NONE"
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          "value": "CWE-185"
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      "value": "An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. If django.utils.text.Truncator's chars() and words() methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en Django, en versiones 2.0 anteriores a la 2.0.3; versiones 1.11 anteriores a la 1.11.11 y versiones 1.8 anteriores a la 1.8.19. Si los métodos de django.utils.text.Truncator chars() y words() se pasaban al argumento html=True, eran extremadamente lentos a la hora de evaluar ciertas entradas debido a una vulnerabilidad catastrófica de búsqueda hacia atrás en una expresión regular. Los métodos chars() y words() se emplean para implementar las plantillas de filtro truncatechars_html y truncatewords_html que, por lo tanto, eran vulnerables."
    }
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  "lastModified": "2026-06-17T02:03:19.720",
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