Improper input validation in Django - CVE-2026-33034
Published: April 7, 2026
Vulnerability identifier: #VU125097
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-33034
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Django Software Foundation
Affected software:
Django
Django
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in ASGI request handling when reading HttpRequest.body from requests with a missing or understated Content-Length header. A remote attacker can send a specially crafted request to cause a denial of service.
The issue can bypass the DATA_UPLOAD_MAX_MEMORY_SIZE limit and load an unbounded request body into memory.
How to mitigate CVE-2026-33034
Install security update from vendor's website.