CVE-2025-14550

Potential denial-of-service vulnerability via repeated headers when using ASGI

Published: Feb 3, 2026Updated: Feb 4, 2026 Sources: CVE List NVD GHSA BDUCWE-407

7.5HIGH

Description

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. `ASGIRequest` allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. 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 Jiyong Yang for reporting this issue.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-407

Affected Products

djangoproject

oss-projectaka django

commercial·RUaka red soft

РЕД ОСOn-premOS

Operating Systems / linux-distro

Django Software Foundation

oss-project·USaka django

DjangoLibraryLibrary

OSS Libraries / web-framework

PyPI

package-ecosystem

Django

OSS Libraries

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://docs.djangoproject.com/en/dev/releases/security

docs.djangoproject.com

https://docs.djangoproject.com/en/dev/releases/security/

docs.djangoproject.com

https://github.com/django/django

github.com

and 15 more references View all →

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