PT-2026-45944 · Djangoproject · Django

Jake Howard + 2 · Published 2026-06-03 · Updated 2026-06-03 · CVE-2026-48587

Mitre

CVSS v3.1

3.1

Low

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

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.

Fix

Weakness Enumeration

CWE-1023

Related Identifiers

CVE-2026-48587

Affected Products

Django

References · 4

• https://docs.djangoproject.com/en/dev/releases/security · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-48587 · Security Note
• https://djangoproject.com/weblog/2026/jun/03/security-releases · Vendor Advisory
• https://groups.google.com/g/django-announce · Note