CVE-2026-48588

An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. `UpdateCacheMiddleware` and the `cache_page()` decorator cache responses that vary on cookies when the incoming request carries unrelated cookies, which allows remote attackers to read private data from the shared cache. 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 Chris Whyland 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/	Patch Vendor Advisory
https://groups.google.com/g/django-announce	Release Notes
https://www.djangoproject.com/weblog/2026/jul/07/security-releases/	Vendor Advisory Patch

Configurations

Configuration 1 (hide)

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

History

09 Jul 2026, 13:01

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/jul/07/security-releases/ -~~	() https://www.djangoproject.com/weblog/2026/jul/07/security-releases/ - Vendor Advisory, Patch

07 Jul 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-07 15:16

Updated : 2026-07-09 13:01

NVD link : CVE-2026-48588

Mitre link : CVE-2026-48588

CVE.ORG link : CVE-2026-48588

JSON object : View

Products Affected

djangoproject

django

CWE

CWE-524

Use of Cache Containing Sensitive Information

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"baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "affectedData": [{"repo": "https://github.com/django/django/", "vendor": "djangoproject", "product": "Django", "versions": [{"status": "affected", "version": "6.0", "lessThan": "6.0.7", "versionType": "python"}, {"status": "unaffected", "version": "6.0.7", "versionType": "python"}, {"status": "affected", "version": "5.2", "lessThan": "5.2.16", "versionType": "python"}, {"status": "unaffected", "version": "5.2.16", "versionType": "python"}], "packageName": "django", "collectionURL": "https://pypi.org/project/Django/", "defaultStatus": "unaffected"}]}], "published": "2026-07-07T15:16:47.447", "references": [{"url": "https://docs.djangoproject.com/en/dev/releases/security/", "tags": ["Patch", "Vendor Advisory"], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}, {"url": "https://groups.google.com/g/django-announce", "tags": ["Release Notes"], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}, {"url": "https://www.djangoproject.com/weblog/2026/jul/07/security-releases/", "tags": ["Vendor Advisory", "Patch"], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "description": [{"lang": "en", "value": "CWE-524"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16.\n`UpdateCacheMiddleware` and the `cache_page()` decorator cache responses that vary on cookies when the incoming request carries unrelated cookies, which allows remote attackers to read private data from the shared cache.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Chris Whyland for reporting this issue."}], "lastModified": "2026-07-09T13:01:25.340", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C0B79BBD-C987-4A96-A18F-14A3492416EA", "versionEndExcluding": "5.2.16", "versionStartIncluding": "5.2"}, {"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1256CB79-DD55-4E6A-BF09-9F18703BA172", "versionEndExcluding": "6.0.7", "versionStartIncluding": "6.0"}], "operator": "OR"}]}], "sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}