id: PYSEC-2026-2449
published: "2026-07-13T14:36:40.566428Z"
modified: "2026-07-13T16:03:53.249822Z"
aliases:
- CVE-2026-25674
- GHSA-mjgh-79qc-68w3
summary: Django has a Race Condition vulnerability
details: |-
  An issue was discovered in 6.0 before 6.0.3, 5.2 before 5.2.12, and 4.2 before 4.2.29.
  
  Race condition in file-system storage and file-based cache backends in Django allows an attacker to cause file system objects to be created with incorrect permissions via concurrent requests, where one thread's temporary `umask` change affects other threads in multi-threaded environments.
  
  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 Tarek Nakkouch for reporting this issue.
affected:
- package:
    name: django
    ecosystem: PyPI
    purl: pkg:pypi/django
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "4.2"
    - fixed: 4.2.29
    - introduced: "5.2"
    - fixed: 5.2.12
    - introduced: "6.0"
    - fixed: 6.0.3
  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
  - 4.2.27
  - 4.2.28
  - 4.2.3
  - 4.2.4
  - 4.2.5
  - 4.2.6
  - 4.2.7
  - 4.2.8
  - 4.2.9
  - "5.2"
  - 5.2.1
  - 5.2.10
  - 5.2.11
  - 5.2.2
  - 5.2.3
  - 5.2.4
  - 5.2.5
  - 5.2.6
  - 5.2.7
  - 5.2.8
  - 5.2.9
  - "6.0"
  - 6.0.1
  - 6.0.2
references:
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2026-25674
- type: WEB
  url: https://docs.djangoproject.com/en/dev/releases/security
- type: PACKAGE
  url: https://github.com/django/django
- type: WEB
  url: https://groups.google.com/g/django-announce
- type: WEB
  url: https://www.djangoproject.com/weblog/2026/mar/03/security-releases
- type: PACKAGE
  url: https://pypi.org/project/django
- type: ADVISORY
  url: https://github.com/advisories/GHSA-mjgh-79qc-68w3
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N