FKIE_CVE-2026-75526

Vulnerability from fkie_nvd - Published: 2026-08-20 19:17 - Updated: 2026-09-09 21:19
Severity
4.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/django-cms/django-cms/commit/b56a568844ff3702495945f73a31d0868285bf88
security-advisories@github.comhttps://github.com/django-cms/django-cms/pull/8711
security-advisories@github.comhttps://github.com/django-cms/django-cms/releases/tag/5.0.9
security-advisories@github.comhttps://github.com/django-cms/django-cms/security/advisories/GHSA-hvq6-2r72-p2x7
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "django-cms",
          "vendor": "django-cms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 5.0.8, \u003c 5.0.9"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "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\u2019s 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."
    }
  ],
  "id": "CVE-2026-75526",
  "lastModified": "2026-09-09T21:19:49.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-75526",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-20T19:20:47.120348Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-20T19:17:03.787",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/django-cms/django-cms/commit/b56a568844ff3702495945f73a31d0868285bf88"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/django-cms/django-cms/pull/8711"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/django-cms/django-cms/releases/tag/5.0.9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/django-cms/django-cms/security/advisories/GHSA-hvq6-2r72-p2x7"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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