affected:
- package:
    ecosystem: PyPI
    name: django
    purl: pkg:pypi/django
  ranges:
  - events:
    - introduced: '4.2'
    - fixed: 4.2.27
    - introduced: '5.1'
    - fixed: 5.1.15
    - introduced: '5.2'
    - fixed: 5.2.9
    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
  - 4.2.21
  - 4.2.22
  - 4.2.23
  - 4.2.24
  - 4.2.25
  - 4.2.26
  - 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
  - 5.1.10
  - 5.1.11
  - 5.1.12
  - 5.1.13
  - 5.1.14
  - 5.1.2
  - 5.1.3
  - 5.1.4
  - 5.1.5
  - 5.1.6
  - 5.1.7
  - 5.1.8
  - 5.1.9
  - '5.2'
  - 5.2.1
  - 5.2.2
  - 5.2.3
  - 5.2.4
  - 5.2.5
  - 5.2.6
  - 5.2.7
  - 5.2.8
aliases:
- CVE-2025-64460
- GHSA-vrcr-9hj9-jcg6
details: |-
  An issue was discovered in 5.2 before 5.2.9, 5.1 before 5.1.15, and 4.2 before 4.2.27.
  Algorithmic complexity in `django.core.serializers.xml_serializer.getInnerText()` allows a remote attacker to cause a potential denial-of-service attack triggering CPU and memory exhaustion via specially crafted XML input processed by the XML `Deserializer`.
  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.
id: PYSEC-2025-109
modified: '2026-05-20T09:18:57.850793Z'
published: '2025-12-02T16:15:56.013Z'
references:
- type: ADVISORY
  url: https://groups.google.com/g/django-announce
- type: FIX
  url: https://docs.djangoproject.com/en/dev/releases/security/
- type: FIX
  url: https://www.djangoproject.com/weblog/2025/dec/02/security-releases/
- type: ADVISORY
  url: https://github.com/advisories/GHSA-vrcr-9hj9-jcg6
severity:
- score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  type: CVSS_V3