pysec-2025-37
Vulnerability from pysec
Published
2025-05-08 04:17
Modified
2025-05-08 05:23
Details

An issue was discovered in Django 4.2 before 4.2.21, 5.1 before 5.1.9, and 5.2 before 5.2.1. The django.utils.html.strip_tags() function is vulnerable to a potential denial-of-service (slow performance) when processing inputs containing large sequences of incomplete HTML tags. The template filter striptags is also vulnerable, because it is built on top of strip_tags().

Impacted products
Name purl
django pkg:pypi/django
Aliases


To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "django",
        "purl": "pkg:pypi/django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2"
            },
            {
              "fixed": "4.2.21"
            },
            {
              "introduced": "5.1"
            },
            {
              "fixed": "5.1.9"
            },
            {
              "introduced": "5.2"
            },
            {
              "fixed": "5.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2",
        "4.2.1",
        "4.2.10",
        "4.2.11",
        "4.2.12",
        "4.2.13",
        "4.2.14",
        "4.2.15",
        "4.2.16",
        "4.2.17",
        "4.2.18",
        "4.2.19",
        "4.2.2",
        "4.2.20",
        "4.2.3",
        "4.2.4",
        "4.2.5",
        "4.2.6",
        "4.2.7",
        "4.2.8",
        "4.2.9",
        "5.1",
        "5.1.1",
        "5.1.2",
        "5.1.3",
        "5.1.4",
        "5.1.5",
        "5.1.6",
        "5.1.7",
        "5.1.8",
        "5.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-32873"
  ],
  "details": "An issue was discovered in Django 4.2 before 4.2.21, 5.1 before 5.1.9, and 5.2 before 5.2.1. The django.utils.html.strip_tags() function is vulnerable to a potential denial-of-service (slow performance) when processing inputs containing large sequences of incomplete HTML tags. The template filter striptags is also vulnerable, because it is built on top of strip_tags().",
  "id": "PYSEC-2025-37",
  "modified": "2025-05-08T05:23:16.210893+00:00",
  "published": "2025-05-08T04:17:18+00:00",
  "references": [
    {
      "type": "ARTICLE",
      "url": "https://www.djangoproject.com/weblog/2025/may/07/security-releases/"
    },
    {
      "type": "WEB",
      "url": "https://docs.djangoproject.com/en/dev/releases/security/"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/django-announce"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/05/07/1"
    }
  ]
}


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