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CVE-2026-42561

Опубликовано: 13 мая 2026
Источник: redhat
CVSS3: 7.5
EPSS Низкий

Описание

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.

A flaw was found in python-multipart. A remote attacker can exploit this denial of service (DoS) vulnerability by sending a specially crafted request with an excessive number of part headers or a single very large header value during multipart/form-data parsing. This can lead to excessive CPU utilization, resulting in a denial of service for the affected system.

Отчет

This is an Important denial of service vulnerability in python-multipart. A remote attacker can trigger excessive CPU utilization by sending specially crafted multipart/form-data requests, leading to service disruption.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Exploit Intelligenceexploit-intelligence-tech-preview/vulnerability-analysis-rhel9Affected
OpenShift Lightspeedopenshift-lightspeed/lightspeed-ocp-rag-rhel9Not affected
OpenShift Lightspeedopenshift-lightspeed/lightspeed-service-api-rhel9Not affected
Red Hat AI Inference Serverrhaiis/vllm-cpu-rhel9Will not fix
Red Hat AI Inference Serverrhaiis/vllm-cuda-rhel9Not affected
Red Hat AI Inference Serverrhaiis/vllm-neuron-rhel9Will not fix
Red Hat AI Inference Serverrhaiis/vllm-rocm-rhel9Not affected
Red Hat AI Inference Serverrhaiis/vllm-spyre-rhel9Will not fix
Red Hat AI Inference Serverrhaiis/vllm-tpu-rhel9Will not fix
Red Hat Ansible Automation Platform 2ansible-automation-platform-25/lightspeed-chatbot-rhel8Will not fix

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Дополнительная информация

Статус:

Important
Дефект:
CWE-606
https://bugzilla.redhat.com/show_bug.cgi?id=2477309python-multipart: python-multipart: Denial of Service via excessive multipart part headers

EPSS

Процентиль: 50%
0.00721
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
ubuntu
3 месяца назад

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.

CVSS3: 7.5
nvd
3 месяца назад

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.

CVSS3: 7.5
debian
3 месяца назад

Python-Multipart is a streaming multipart parser for Python. Prior to ...

CVSS3: 7.5
github
3 месяца назад

python-multipart has Denial of Service via unbounded multipart part headers

suse-cvrf
2 месяца назад

Security update for python-python-multipart

EPSS

Процентиль: 50%
0.00721
Низкий

7.5 High

CVSS3