PYSEC-2026-2448
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/django/PYSEC-2026-2448.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2448
- Aliases
- Published
- 2026-07-13T14:36:40.418771Z
- Modified
- 2026-07-13T16:43:46.393614233Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Django vulnerable to Uncontrolled Resource Consumption
- 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.
URLField.to_python()in Django callsurllib.parse.urlsplit(), which performs NFKC normalization on Windows that is disproportionately slow for certain Unicode characters, allowing a remote attacker to cause denial of service via large URL inputs containing these characters.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.
- References
-
- https://nvd.nist.gov/vuln/detail/CVE-2026-25673
- https://docs.djangoproject.com/en/dev/releases/security
- https://github.com/django/django
- https://groups.google.com/g/django-announce
- https://www.djangoproject.com/weblog/2026/mar/03/security-releases
- https://pypi.org/project/django
- https://github.com/advisories/GHSA-8p8v-wh79-9r56
Affected packages
PyPI / django
Package
- Name
- django
- View open source insights on deps.dev
- Purl
- pkg:pypi/django
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced4.2Fixed4.2.29Introduced5.2Fixed5.2.12Introduced6.0Fixed6.0.3
Affected versions
4.*
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.2.9
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
4.2.20
4.2.21
4.2.22
4.2.23
4.2.24
4.2.25
4.2.26
4.2.27
4.2.28
5.*
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
5.2.9
5.2.10
5.2.11
6.*
6.0
6.0.1
6.0.2