PYSEC-2026-197

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/django/PYSEC-2026-197.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-197
Aliases
Published
2026-06-03T14:16:41.247Z
Modified
2026-06-06T10:41:26.375374620Z
Severity
  • 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. django.middleware.cache.UpdateCacheMiddleware in Django does not add Authorization to the Vary response header for requests bearing that header without Cache-Control: public, which allows remote attackers to read private cached responses via unauthenticated requests to the same URL. 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 Shai Berger for reporting this issue.

References

Affected packages

PyPI / django

Package

Name
django
View open source insights on deps.dev
Purl
pkg:pypi/django

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.2
Fixed
5.2.15
Introduced
6.0
Fixed
6.0.6

Affected versions

5.*
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
5.2.10
5.2.11
5.2.12
5.2.13
5.2.14
6.*
6.0
6.0.1
6.0.2
6.0.3
6.0.4
6.0.5

Database specific

source 
"https://github.com/pypa/advisory-database/blob/main/vulns/django/PYSEC-2026-197.yaml"