PYSEC-2026-54
At a glance
- Published
- Updated
- CVE
- CVE-2026-5766
- Aliases
- BIT-django-2026-5766, GHSA-w26r-rmm8-9c29
- CVSS_V4
- 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/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
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.
Affected packages
| Package | Versions |
|---|---|
| PyPI · django | introduced 5.2, fixed 5.2.14, introduced 6.0, fixed 6.0.5 |
References
- https://docs.djangoproject.com/en/dev/releases/security/ ADVISORY
- https://groups.google.com/g/django-announce ADVISORY
- https://www.djangoproject.com/weblog/2026/may/05/security-releases/ ADVISORY
- https://github.com/advisories/GHSA-w26r-rmm8-9c29 ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |