CVE-2026-48587

An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. `django.utils.cache.has_vary_header()` in Django does not strip leading or trailing whitespace from `Vary` response header values before comparison, which allows remote attackers to read cached responses via requests to URLs whose responses contain whitespace-padded Vary header values. 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 Navid Rezazadeh for reporting this issue.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*

History

21 Jul 2026, 19:10

Type Values Removed Values Added
Summary
  • (es) Se descubrió un problema en Django 5.2 anterior a 5.2.15 y 6.0 anterior a 6.0.6. 'django.utils.cache.has_vary_header()' en Django no elimina los espacios en blanco iniciales o finales de los valores del encabezado de respuesta 'Vary' antes de la comparación, lo que permite a atacantes remotos leer respuestas en caché a través de solicitudes a URL cuyas respuestas contienen valores de encabezado Vary rellenados con espacios en blanco. Series de Django anteriores y no compatibles (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y también podrían estar afectadas. Django desea agradecer a Navid Rezazadeh por informar sobre este problema.

05 Jun 2026, 13:03

Type Values Removed Values Added
CPE cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
First Time Djangoproject
Djangoproject django
References () https://docs.djangoproject.com/en/dev/releases/security/ - () https://docs.djangoproject.com/en/dev/releases/security/ - Patch, Vendor Advisory
References () https://groups.google.com/g/django-announce - () https://groups.google.com/g/django-announce - Release Notes
References () https://www.djangoproject.com/weblog/2026/jun/03/security-releases/ - () https://www.djangoproject.com/weblog/2026/jun/03/security-releases/ - Patch, Vendor Advisory

03 Jun 2026, 14:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-06-03 14:16

Updated : 2026-07-21 19:10


NVD link : CVE-2026-48587

Mitre link : CVE-2026-48587

CVE.ORG link : CVE-2026-48587


JSON object : View

Products Affected

djangoproject

  • django
CWE
CWE-1023

Incomplete Comparison with Missing Factors