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CVE-2026-40347

Опубликовано: 17 апр. 2026
Источник: redhat
CVSS3: 5.9
EPSS Низкий

Описание

Python-Multipart is a streaming multipart parser for Python. Versions prior to 0.0.26 have a denial of service vulnerability when parsing crafted multipart/form-data requests with large preamble or epilogue sections. Upgrade to version 0.0.26 or later, which skips ahead to the next boundary candidate when processing leading CR/LF data and immediately discards epilogue data after the closing boundary.

A flaw was found in Python-Multipart, a tool for processing web form data. A remote attacker could exploit this vulnerability by sending specially crafted web requests. These requests, containing unusually large sections of data before or after the main content, could cause the system to become unresponsive. This leads to a denial of service, preventing legitimate users from accessing the service.

Меры по смягчению последствий

To mitigate this issue, restrict network access to services utilizing python-multipart to trusted clients only. Implement rate limiting and robust input validation at the application or network level to filter out malformed multipart/form-data requests before they reach the vulnerable component. This can help prevent the service from becoming unresponsive due to specially crafted requests.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Lightspeed Corelightspeed-core/lightspeed-stack-rhel9Fix deferred
Lightspeed Corelightspeed-core/rag-tool-rhel9Fix deferred
Migration Toolkit for Applications 8mta/mta-solution-server-rhel9Fix deferred
OpenShift Lightspeedopenshift-lightspeed/lightspeed-ocp-rag-rhel9Fix deferred
OpenShift Lightspeedopenshift-lightspeed/lightspeed-service-api-rhel9Fix deferred
Red Hat AI Inference Serverrhaiis/vllm-cpu-rhel9Fix deferred
Red Hat AI Inference Serverrhaiis/vllm-cuda-rhel9Fix deferred
Red Hat AI Inference Serverrhaiis/vllm-neuron-rhel9Fix deferred
Red Hat AI Inference Serverrhaiis/vllm-rocm-rhel9Fix deferred
Red Hat AI Inference Serverrhaiis/vllm-spyre-rhel9Fix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-1050
https://bugzilla.redhat.com/show_bug.cgi?id=2459381python-multipart: Python-Multipart: Denial of Service via crafted multipart/form-data requests

EPSS

Процентиль: 28%
0.00351
Низкий

5.9 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.3
ubuntu
4 месяца назад

Python-Multipart is a streaming multipart parser for Python. Versions prior to 0.0.26 have a denial of service vulnerability when parsing crafted `multipart/form-data` requests with large preamble or epilogue sections. Upgrade to version 0.0.26 or later, which skips ahead to the next boundary candidate when processing leading CR/LF data and immediately discards epilogue data after the closing boundary.

CVSS3: 5.3
nvd
4 месяца назад

Python-Multipart is a streaming multipart parser for Python. Versions prior to 0.0.26 have a denial of service vulnerability when parsing crafted `multipart/form-data` requests with large preamble or epilogue sections. Upgrade to version 0.0.26 or later, which skips ahead to the next boundary candidate when processing leading CR/LF data and immediately discards epilogue data after the closing boundary.

CVSS3: 5.3
debian
4 месяца назад

Python-Multipart is a streaming multipart parser for Python. Versions ...

CVSS3: 5.3
github
4 месяца назад

python-multipart affected by Denial of Service via large multipart preamble or epilogue data

suse-cvrf
2 месяца назад

Security update for python-python-multipart

EPSS

Процентиль: 28%
0.00351
Низкий

5.9 Medium

CVSS3