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CVE-2026-34786

Опубликовано: 02 апр. 2026
Источник: redhat
CVSS3: 6.5
EPSS Низкий

Описание

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static#applicable_rules evaluates several header_rules types against the raw URL-encoded PATH_INFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a URL-encoded variant of a static path can serve the same file without the headers that header_rules were intended to apply. In deployments that rely on Rack::Static to attach security-relevant response headers to static content, this can allow an attacker to bypass those headers by requesting an encoded form of the path. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.

A flaw was found in Rack. A remote attacker can exploit this vulnerability by sending a specially crafted request with a URL-encoded static path. This bypasses security-relevant response headers intended for static content, potentially leading to information disclosure or other unintended consequences.

Меры по смягчению последствий

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Logging Subsystem for Red Hat OpenShiftopenshift-logging/cluster-logging-operator-bundleFix deferred
Logging Subsystem for Red Hat OpenShiftopenshift-logging/cluster-logging-rhel9-operatorFix deferred
Logging Subsystem for Red Hat OpenShiftopenshift-logging/eventrouter-rhel9Fix deferred
Logging Subsystem for Red Hat OpenShiftopenshift-logging/fluentd-rhel9Fix deferred
Logging Subsystem for Red Hat OpenShiftopenshift-logging/log-file-metric-exporter-rhel9Fix deferred
Logging Subsystem for Red Hat OpenShiftopenshift-logging/logging-view-plugin-rhel9Fix deferred
Logging Subsystem for Red Hat OpenShiftopenshift-logging/vector-rhel9Fix deferred
Red Hat 3scale API Management Platform 23scale-amp20/backendFix deferred
Red Hat 3scale API Management Platform 23scale-amp20/systemFix deferred
Red Hat 3scale API Management Platform 23scale-amp21/backendFix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-179
https://bugzilla.redhat.com/show_bug.cgi?id=2454507rack: Rack: Security header bypass via URL-encoded static path requests

EPSS

Процентиль: 9%
0.00195
Низкий

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.3
ubuntu
4 месяца назад

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static#applicable_rules evaluates several header_rules types against the raw URL-encoded PATH_INFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a URL-encoded variant of a static path can serve the same file without the headers that header_rules were intended to apply. In deployments that rely on Rack::Static to attach security-relevant response headers to static content, this can allow an attacker to bypass those headers by requesting an encoded form of the path. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.

CVSS3: 5.3
nvd
4 месяца назад

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static#applicable_rules evaluates several header_rules types against the raw URL-encoded PATH_INFO, while the underlying file-serving path is decoded before the file is served. As a result, a request for a URL-encoded variant of a static path can serve the same file without the headers that header_rules were intended to apply. In deployments that rely on Rack::Static to attach security-relevant response headers to static content, this can allow an attacker to bypass those headers by requesting an encoded form of the path. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.

CVSS3: 5.3
debian
4 месяца назад

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, ...

CVSS3: 5.3
github
4 месяца назад

Rack:: Static header_rules bypass via URL-encoded paths

CVSS3: 5.3
fstec
4 месяца назад

Уязвимость модульного интерфейса веб-сервера Rack языка программирования Ruby, позволяющая нарушителю обойти существующие механизмы безопасности

EPSS

Процентиль: 9%
0.00195
Низкий

6.5 Medium

CVSS3

Уязвимость CVE-2026-34786