GHSA-WQFG-M96J-85VM

Vulnerability from github – Published: 2025-04-02 15:31 – Updated: 2025-04-09 20:02
VLAI
Summary
Django Potential Denial of Service (DoS) on Windows
Details

An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_language are subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters.

Severity
5.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0"
            },
            {
              "fixed": "5.0.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.1"
            },
            {
              "fixed": "5.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-27556"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-02T20:11:40Z",
    "nvd_published_at": "2025-04-02T13:15:44Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_language are subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters.",
  "id": "GHSA-wqfg-m96j-85vm",
  "modified": "2025-04-09T20:02:06Z",
  "published": "2025-04-02T15:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27556"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/2cb311f7b069723027fb5def4044d1816d7d2afd"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/39e2297210d9d2938c75fc911d45f0e863dc4821"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/8c6871b097b6c49d2a782c0d80d908bcbe2116f1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/edc2716d01a6fdd84b173c02031695231bcee1f8"
    },
    {
      "type": "WEB",
      "url": "https://docs.djangoproject.com/en/dev/releases/security"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/django/django"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2025-14.yaml"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/django-announce"
    },
    {
      "type": "WEB",
      "url": "https://www.djangoproject.com/weblog/2025/apr/02/security-releases"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/04/02/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Django Potential Denial of Service (DoS) on Windows "
}



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