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CVE-2026-1285

Estado: AnalizadaAlta (7.5)—

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. `django.utils.text.Truncator.chars()` and `Truncator.words()` methods (with `html=True`) and the `truncatechars_html` and `truncatewords_html` template filters allow a remote attacker to cause a potential denial-of-service via crafted inputs containing a large number of unmatched HTML end tags. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Seokchan Yoon for reporting this issue.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad en Django accesible remotamente sin autenticación (AV:N, PR:N, UI:N) que causa DoS mediante entrada HTML malformada; impacto de disponibilidad confirmado por CWE-407 y descripción de negación de servicio.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Djangoproject — Django

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-1285",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-1285",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-03T16:22:30.293747Z"
        }
      }
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    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "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"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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  "affected": [
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      "affectedData": [
        {
          "repo": "https://github.com/django/django/",
          "vendor": "djangoproject",
          "product": "Django",
          "versions": [
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              "status": "affected",
              "version": "6.0",
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              "versionType": "semver"
            },
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          "packageName": "django",
          "collectionURL": "https://pypi.org/project/Django/",
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  "published": "2026-02-03T15:16:13.570",
  "references": [
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        "Vendor Advisory"
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      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"
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        "Vendor Advisory"
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      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
      "description": [
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          "lang": "en",
          "value": "CWE-407"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28.\n`django.utils.text.Truncator.chars()` and `Truncator.words()` methods (with `html=True`) and the `truncatechars_html` and `truncatewords_html` template filters allow a remote attacker to cause a potential denial-of-service via crafted inputs containing a large number of unmatched HTML end tags.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Seokchan Yoon for reporting this issue."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en 6.0 anterior a 6.0.2, 5.2 anterior a 5.2.11 y 4.2 anterior a 4.2.28.\nLos métodos 'django.utils.text.Truncator.chars()' y 'Truncator.words()' (con 'html=True') y los filtros de plantilla 'truncatechars_html' y 'truncatewords_html' permiten a un atacante remoto causar una potencial denegación de servicio mediante entradas manipuladas que contienen un gran número de etiquetas de cierre HTML no coincidentes.\nSeries de Django anteriores y sin soporte (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y también pueden verse afectadas.\nDjango desea agradecer a Seokchan Yoon por informar de este problema."
    }
  ],
  "lastModified": "2026-06-17T10:15:27.220",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "4.2.28",
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