CVE-2026-75526

{
  "id": "CVE-2026-75526",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-20T19:17:03.787",
  "lastModified": "2026-10-26T10:10:00.140",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "django CMS is an easy-to-use and developer-friendly enterprise content management system powered by Django. From 5.0.8 until 5.0.9, ContentRenderer.render_placeholder in cms/plugin_rendering.py can pass stored, attacker-controlled values to ContentRenderer.render_exception when plugin rendering fails in edit mode. Values from get_short_description(), the exception message, the placeholder, or placeholder.source are interpolated into a cms-rendering-exception heading and later returned through mark_safe. Because the heading is not escaped, stored HTML executes in an editor’s browser, and settings.DEBUG does not prevent the custom heading from rendering. The fix uses format_html to escape the message before safe placeholder output is returned. This issue is fixed in versions 5.0.9."
    },
    {
      "lang": "es",
      "value": "django CMS es un sistema de gestión de contenido empresarial fácil de usar y amigable para desarrolladores, impulsado por Django. Desde la versión 5.0.8 hasta la 5.0.9, ContentRenderer.render_placeholder en cms/plugin_rendering.py puede pasar valores almacenados y controlados por el atacante a ContentRenderer.render_exception cuando la renderización del plugin falla en modo de edición. Los valores de get_short_description(), el mensaje de excepción, el marcador de posición (placeholder) o placeholder.source se interpolan en un encabezado cms-rendering-exception y luego se devuelven a través de mark_safe. Debido a que el encabezado no se escapa, el HTML almacenado se ejecuta en el navegador de un editor, y settings.DEBUG no evita que el encabezado personalizado se renderice. La solución utiliza format_html para escapar el mensaje antes de que se devuelva la salida segura del marcador de posición (placeholder). Este problema se corrige en la versión 5.0.9."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "django-cms",
          "product": "django-cms",
          "versions": [
            {
              "version": ">= 5.0.8, < 5.0.9",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-20T19:20:47.120348Z",
          "id": "CVE-2026-75526",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/django-cms/django-cms/commit/b56a568844ff3702495945f73a31d0868285bf88",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/django-cms/django-cms/pull/8711",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/django-cms/django-cms/releases/tag/5.0.9",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/django-cms/django-cms/security/advisories/GHSA-hvq6-2r72-p2x7",
      "source": "[email protected]"
    }
  ]
}