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.
References
| Link | Resource |
|---|---|
| https://docs.djangoproject.com/en/dev/releases/security/ | Patch Vendor Advisory |
| https://groups.google.com/g/django-announce | Release Notes |
| https://www.djangoproject.com/weblog/2026/jun/03/security-releases/ | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
21 Jul 2026, 19:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
05 Jun 2026, 13:03
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://docs.djangoproject.com/en/dev/releases/security/ - Patch, Vendor Advisory | |
| References | () https://groups.google.com/g/django-announce - Release Notes | |
| References | () https://www.djangoproject.com/weblog/2026/jun/03/security-releases/ - Patch, Vendor Advisory | |
| CPE | cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* | |
| First Time |
Djangoproject
Djangoproject django |
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
