CVE-2026-25673

HIGH

7.5

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. `URLField.to_python()` in Django calls `urllib.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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/3/2026

Derniere modification3/5/2026

Sourcenvd

Observations honeypot0

Produits affectes

djangoproject:django

Faiblesses (CWE)

CWE-400CWE-770

References

https://docs.djangoproject.com/en/dev/releases/security/(6a34fbeb-21d4-45e7-8e0a-62b95bc12c92)

https://groups.google.com/g/django-announce(6a34fbeb-21d4-45e7-8e0a-62b95bc12c92)

https://www.djangoproject.com/weblog/2026/mar/03/security-releases/(6a34fbeb-21d4-45e7-8e0a-62b95bc12c92)

Correlations IOC

Aucune correlation enregistree

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