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.

CVSS v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://docs.djangoproject.com/en/dev/releases/security/
https://groups.google.com/g/django-announce
https://www.djangoproject.com/weblog/2026/jun/03/security-releases/

Configurations

No configuration.

History

03 Jun 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-03 14:16

Updated : 2026-06-04 15:21

NVD link : CVE-2026-48587

Mitre link : CVE-2026-48587

CVE.ORG link : CVE-2026-48587

JSON object : View

Products Affected

No product.

CWE

CWE-1023

Incomplete Comparison with Missing Factors

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