# CVE-2026-33034: Django memory limit bypass in ASGI requests

Source: https://junglewise.ai/threats/cve-2026-33034-django-memory-limit-bypass-in-asgi-requests  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-07. Updated: 2026-06-05  
License: CC BY 4.0 with a link back

CVE-2026-33034 · Severity: high · CVSS 7.5 · Published 2026-04-07

A vulnerability in the Django web framework could allow an attacker to crash a server by sending specially crafted web requests. By omitting or misstating the size of an uploaded file, an attacker can bypass security limits and force the server to load an unlimited amount of data into its memory. This can lead to a denial-of-service condition, making the website or application unavailable to legitimate users.

Technologies: [Djangoproject Django](https://junglewise.ai/threats/technologies/djangoproject-django), [Django (PyPI)](https://junglewise.ai/threats/technologies/django). Vendors: [Djangoproject](https://junglewise.ai/threats/vendors/djangoproject), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-33034 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-33034 being exploited in the wild.

**How severe is CVE-2026-33034?** High severity, with a CVSS score of 7.5, published 7 April 2026.

**Which products and versions are affected?** Django (PyPI) ECOSYSTEM:introduced=4.2,fixed=4.2.30,introduced=5.2,fixed=5.2.13,introduced=6.0,fixed=6.0.4, ECOSYSTEM:introduced=6.0,fixed=6.0.4.

**Is there a fix for CVE-2026-33034?** Yes. Django (PyPI): upgrade to 6.0.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-33034 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-33034?** Check whether you run Djangoproject Django or Django (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Django (PyPI): upgrade to 6.0.4 or later

  ```sh
  pip install "Django>=6.0.4"
  ```


## Technical details

A resource exhaustion vulnerability exists in Django's handling of ASGI requests. When reading 'HttpRequest.body', the framework fails to properly enforce the 'DATA_UPLOAD_MAX_MEMORY_SIZE' limit if the 'Content-Length' header is missing or provides an understated value. A remote, unauthenticated attacker can exploit this by sending a large request body, causing the server to allocate unbounded memory. This leads to a Denial of Service (DoS) via memory exhaustion. The issue is fixed in Django versions 6.0.4, 5.2.13, and 4.2.30.

## Affected products

- Django Software Foundation Django >= 6.0, < 6.0.4; >= 5.2, < 5.2.13; >= 4.2, < 4.2.30

## Identifiers

- CVE-2026-33034
- GHSA-933h-hp56-hf7m
- PYSEC-2026-49

## Timeline

- 2026-04-07: disclosed
- 2026-04-07: advisory
- 2026-04-07: patched

## References

- [https://docs.djangoproject.com/en/dev/releases/security](https://docs.djangoproject.com/en/dev/releases/security)
- [https://groups.google.com/g/django-announce](https://groups.google.com/g/django-announce)
- [https://www.djangoproject.com/weblog/2026/apr/07/security-releases](https://www.djangoproject.com/weblog/2026/apr/07/security-releases)
- [https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-49.yaml](https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-49.yaml)

## Related threats

- [Django GeoDjango unbounded recursion denial of service](https://junglewise.ai/threats/cve-2026-15830-django-geodjango-unbounded-recursion-denial-of-service)
- [Django GeoDjango spatial lookups file write and request forgery](https://junglewise.ai/threats/cve-2026-15307-django-geodjango-spatial-lookups-file-write-and-request-forgery)
- [PYSEC-2026-2449 - Django has a Race Condition vulnerability](https://junglewise.ai/threats/cve-2026-25674-django-has-a-race-condition-vulnerability)
- [PYSEC-2026-1296 - Django vulnerable to partial directory traversal via archives](https://junglewise.ai/threats/cve-2025-59682-django-vulnerable-to-partial-directory-traversal-via-archives)
- [Django DomainNameValidator header injection via newline characters](https://junglewise.ai/threats/cve-2026-53878-django-domainnamevalidator-header-injection-via-newline)