CVE-2026-5766

Publication date 5 May 2026

Last updated 13 May 2026

Ubuntu priority

Cvss 3 Severity Score

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.

Why is this CVE low priority?

Django developers have rated this to be a low-severity issue

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
python-django	26.04 LTS resolute	Fixed 3:5.2.9-0ubuntu4.1
	25.10 questing	Fixed 3:5.2.4-1ubuntu2.5
	24.04 LTS noble	Fixed 3:4.2.11-1ubuntu1.16
	22.04 LTS jammy	Fixed 2:3.2.12-2ubuntu1.27
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Needs evaluation

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-8232-1
Django vulnerabilities
5 May 2026