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CVE-2025-66418

Опубликовано: 05 дек. 2025
Источник: redhat
CVSS3: 7.5
EPSS Низкий

Описание

urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chain was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation for the decompressed data. This vulnerability is fixed in 2.6.0.

A flaw was found in urllib3 Python library that could lead to a Denial of Service condition. A remote, malicious server can exploit this flaw by responding to a client request with an HTTP message that uses an excessive number of chained compression algorithms. This unlimited decompression chain causes the client system to consume a virtually unbounded amount of CPU resources and memory. The high resource usage leads to service disruption, making the application unresponsive.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Assisted Installer for Red Hat OpenShift Container Platform 2assisted/agent-preinstall-image-builder-rhel9Not affected
Assisted Installer for Red Hat OpenShift Container Platform 2rhai/assisted-installer-agent-rhel9Will not fix
Assisted Installer for Red Hat OpenShift Container Platform 2rhai/assisted-installer-controller-rhel9Will not fix
Assisted Installer for Red Hat OpenShift Container Platform 2rhai/assisted-installer-rhel9Not affected
cert-manager Operator for Red Hat OpenShiftcert-manager/cert-manager-istio-csr-rhel9Affected
Confidential Compute Attestationbuild-of-trustee/trustee-rhel9Affected
Confidential Compute Attestationconfidential-compute-attestation-tech-preview/trustee-rhel9Affected
Confidential Compute Attestationopenshift-sandboxed-containers/osc-cloud-api-adaptor-rhel9Affected
Confidential Compute Attestationopenshift-sandboxed-containers/osc-monitor-rhel9Affected
Confidential Compute Attestationopenshift-sandboxed-containers/osc-podvm-builder-rhel9Affected

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Дополнительная информация

Статус:

Important
Дефект:
CWE-770
https://bugzilla.redhat.com/show_bug.cgi?id=2419455urllib3: urllib3: Unbounded decompression chain leads to resource exhaustion

EPSS

Процентиль: 8%
0.00029
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
ubuntu
4 месяца назад

urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chain was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation for the decompressed data. This vulnerability is fixed in 2.6.0.

CVSS3: 7.5
nvd
4 месяца назад

urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chain was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation for the decompressed data. This vulnerability is fixed in 2.6.0.

msrc
3 месяца назад

urllib3 allows an unbounded number of links in the decompression chain

CVSS3: 7.5
debian
4 месяца назад

urllib3 is a user-friendly HTTP client library for Python. Starting in ...

github
4 месяца назад

urllib3 allows an unbounded number of links in the decompression chain

EPSS

Процентиль: 8%
0.00029
Низкий

7.5 High

CVSS3

Уязвимость CVE-2025-66418