What’s Vulnerable › Vulnerabilities

CVE-2026-25674: Potential incorrect permissions on newly created file system objects

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-03 · updated 2026-06-17
• Weakness: CWE-362

Description

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 products

• Django: from 4.2.0 before 4.2.29; from 5.2 before 5.2.12; from 6.0 before 6.0.3 — fixed in 4.2.29, 5.2.12, 6.0.3

How to fix

Upgrade to a fixed version: Django 4.2.29, 5.2.12, 6.0.3. Check the vendor advisory for mitigations.

References

• https://docs.djangoproject.com/en/dev/releases/security/
• https://groups.google.com/g/django-announce
• https://www.djangoproject.com/weblog/2026/mar/03/security-releases/

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