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.
Published: 2026-05-05
Score: 6.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-w26r-rmm8-9c29 Django has an Improper Handling of Length Parameter Inconsistency
Ubuntu USN Ubuntu USN USN-8232-1 Django vulnerabilities
History

Thu, 07 May 2026 14:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*

Wed, 06 May 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 05 May 2026 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Djangoproject
Djangoproject django
Vendors & Products Djangoproject
Djangoproject django

Tue, 05 May 2026 16:15:00 +0000

Type Values Removed Values Added
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.
Title Potential denial-of-service vulnerability in ASGI requests via file upload limit bypass
Weaknesses CWE-130
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Subscriptions

Djangoproject Django
cve-icon MITRE

Status: PUBLISHED

Assigner: DSF

Published:

Updated: 2026-05-06T15:25:38.926Z

Reserved: 2026-04-07T19:29:07.042Z

Link: CVE-2026-5766

cve-icon Vulnrichment

Updated: 2026-05-05T17:03:24.651Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-05T16:16:17.740

Modified: 2026-05-07T14:16:39.443

Link: CVE-2026-5766

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-05T18:15:29Z

Weaknesses