CVE-2026-25673
CVE-2026-25673 · Potential denial-of-service vulnerability in URLField via Unicode normalization on Windows
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
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.
CVSS 7.5 · Alta · EPSS 0,8% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: python
Productos y versiones afectados
django
- Versiones
- ≥ 6.0, < 6.0.3: Afectada (semver)
- 6.0.3: No afectada (semver)
- ≥ 5.2, < 5.2.12: Afectada (semver)
- 5.2.12: No afectada (semver)
- ≥ 4.2, < 4.2.29: Afectada (semver)
- 4.2.29: No afectada (semver)
Actualiza a 4.2.29; Actualiza a 5.2.12; Actualiza a 6.0.3
django PyPI
- Versiones
- 6.0
- 6.0.1
- 6.0.2
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 6.0, < 6.0.3
Actualiza a 6.0.3
django PyPI
- Versiones
- 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
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 5.2, < 5.2.12
Actualiza a 5.2.12
django PyPI
- Versiones
- 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
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 4.2, < 4.2.29
Actualiza a 4.2.29
django PyPI
- Versiones
- 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
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 4.2, < 4.2.29 ∪ ≥ 5.2, < 5.2.12 ∪ ≥ 6.0, < 6.0.3
Actualiza a 4.2.29; Actualiza a 5.2.12; Actualiza a 6.0.3
Fuentes originales
- 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/
- https://access.redhat.com/security/cve/CVE-2026-25673
- https://bugzilla.redhat.com/show_bug.cgi?id=2444115
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25673.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-25673