CVE-2026-33034
Potential denial-of-service vulnerability in ASGI requests via memory upload limit bypass
Description
An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGI requests with a missing or understated `Content-Length` header could bypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading `HttpRequest.body`, allowing remote attackers to load an unbounded request body into memory. 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 Superior for reporting this issue.
INFO
Published Date :
April 7, 2026, 3:17 p.m.
Last Modified :
April 13, 2026, 5:38 p.m.
Remotely Exploit :
Yes !
Source :
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Django to version 6.0.4 or later.
- Update Django to version 5.2.13 or later.
- Update Django to version 4.2.30 or later.
Public PoC/Exploit Available at Github
CVE-2026-33034 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-33034.
| URL | Resource |
|---|---|
| https://docs.djangoproject.com/en/dev/releases/security/ | Patch Vendor Advisory |
| https://groups.google.com/g/django-announce | Release Notes |
| https://www.djangoproject.com/weblog/2026/apr/07/security-releases/ | Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-33034 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-33034
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Makefile Python
A PoC script for demonstrating CVE-2026-33033
Python
All Public RunWhen Helm Charts - Managed by terraform
Shell Dockerfile Go Template
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-33034 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-33034 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 13, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 4.2 up to (excluding) 4.2.30 *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 5.2 up to (excluding) 5.2.13 *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.0.4 Added Reference Type Django Software Foundation: https://docs.djangoproject.com/en/dev/releases/security/ Types: Patch, Vendor Advisory Added Reference Type Django Software Foundation: https://groups.google.com/g/django-announce Types: Release Notes Added Reference Type Django Software Foundation: https://www.djangoproject.com/weblog/2026/apr/07/security-releases/ Types: Patch, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 07, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
New CVE Received by 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
Apr. 07, 2026
Action Type Old Value New Value Added Description An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGI requests with a missing or understated `Content-Length` header could bypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading `HttpRequest.body`, allowing remote attackers to load an unbounded request body into memory. 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 Superior for reporting this issue. Added CWE CWE-770 Added Reference https://docs.djangoproject.com/en/dev/releases/security/ Added Reference https://groups.google.com/g/django-announce Added Reference https://www.djangoproject.com/weblog/2026/apr/07/security-releases/