CVE-2026-6907

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. `django.middleware.cache.UpdateCacheMiddleware` erroneously caches requests where the `Vary` header contained an asterisk (`'*'`). This can lead to private data being stored and served. 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 Ahmad Sadeddin for reporting this issue.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

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/	Vendor Advisory
https://groups.google.com/g/django-announce	Third Party Advisory
https://www.djangoproject.com/weblog/2026/may/05/security-releases/	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-05-05 16:16

Updated : 2026-06-17 11:01

NVD link : CVE-2026-6907

Mitre link : CVE-2026-6907

CVE.ORG link : CVE-2026-6907

JSON object : View

Products Affected

djangoproject

django

CWE

CWE-524

Use of Cache Containing Sensitive Information

{"id": "CVE-2026-6907", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6907", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-05T17:03:42.610418Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "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": "6.0.5", "versionType": "python"}, {"status": "unaffected", "version": "6.0.5", "versionType": "python"}, {"status": "affected", "version": "5.2", "lessThan": "5.2.14", "versionType": "python"}, {"status": "unaffected", "version": "5.2.14", "versionType": "python"}], "packageName": "django", "collectionURL": "https://pypi.org/project/Django/", "defaultStatus": "unaffected"}]}], "published": "2026-05-05T16:16:18.227", "references": [{"url": "https://docs.djangoproject.com/en/dev/releases/security/", "tags": ["Vendor Advisory"], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}, {"url": "https://groups.google.com/g/django-announce", "tags": ["Third Party Advisory"], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}, {"url": "https://www.djangoproject.com/weblog/2026/may/05/security-releases/", "tags": ["Vendor Advisory"], "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 6.0 before 6.0.5 and 5.2 before 5.2.14.\n`django.middleware.cache.UpdateCacheMiddleware` erroneously caches requests where the `Vary` header contained an asterisk (`'*'`). This can lead to private data being stored and served.\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 Ahmad Sadeddin for reporting this issue."}], "lastModified": "2026-06-17T11:01:29.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5AD5B44B-7569-458C-8F44-3021D9CC577C", "versionEndExcluding": "5.2.14", "versionStartIncluding": "5.2"}, {"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "30ADB5F4-66B5-4015-BB55-CCB31106AB95", "versionEndExcluding": "6.0.5", "versionStartIncluding": "6.0"}], "operator": "OR"}]}], "sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}