CVE-2026-5766
Full vulnerability record from the local CVENow database.
Description
An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. ASGI requests with a missing or understated `Content-Length` header can bypass the `FILE_UPLOAD_MAX_MEMORY_SIZE` limit, potentially loading large files into memory and causing service degradation. As a reminder, Django expects a limit to be configured at the web server level rather than solely relying on `FILE_UPLOAD_MAX_MEMORY_SIZE`. 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 Kyle Agronick for reporting this issue.
Severity
MEDIUM
CVSS score
6.3
(v4.0)
Vulnerability status
Analyzed
Source identifier
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
Published
2026-05-05 16:16:17.740000
Last modified
2026-10-26 19:10:00.163000
View original CVE JSON
{
"id": "CVE-2026-5766",
"sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
"published": "2026-05-05T16:16:17.740",
"lastModified": "2026-10-26T19:10:00.163",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14.\nASGI requests with a missing or understated `Content-Length` header can bypass the `FILE_UPLOAD_MAX_MEMORY_SIZE` limit, potentially loading large files into memory and causing service degradation.\r\n \r\nAs a reminder, Django expects a limit to be configured at the web server level rather than solely relying on `FILE_UPLOAD_MAX_MEMORY_SIZE`.\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 Kyle Agronick for reporting this issue."
},
{
"lang": "es",
"value": "Se descubrió un problema en 6.0 anterior a 6.0.5 y 5.2 anterior a 5.2.14.\nLas solicitudes ASGI con un encabezado ’Content-Length’ faltante o subestimado pueden eludir el límite de ’FILE_UPLOAD_MAX_MEMORY_SIZE’, cargando potencialmente archivos grandes en la memoria y causando degradación del servicio.\n\nComo recordatorio, Django espera que se configure un límite a nivel del servidor web en lugar de depender únicamente de ’FILE_UPLOAD_MAX_MEMORY_SIZE’.\nSeries de Django anteriores y no compatibles (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y también pueden verse afectadas.\nDjango desea agradecer a Kyle Agronick por informar este problema."
}
],
"affected": [
{
"source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
"affectedData": [
{
"vendor": "djangoproject",
"product": "Django",
"defaultStatus": "unaffected",
"collectionURL": "https://pypi.org/project/Django/",
"packageName": "django",
"repo": "https://github.com/django/django/",
"versions": [
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"lessThan": "6.0.5",
"versionType": "python",
"status": "affected"
},
{
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"versionType": "python",
"status": "unaffected"
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"versionType": "python",
"status": "affected"
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{
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"status": "unaffected"
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"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
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"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
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"cvssMetricV31": [
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"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "LOW"
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"impactScore": 1.4
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"timestamp": "2026-05-05T17:03:20.935294Z",
"id": "CVE-2026-5766",
"options": [
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"role": "CISA Coordinator",
"version": "2.0.3"
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"value": "CWE-130"
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"configurations": [
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"source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
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"source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
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