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CVE-2026-26962

Опубликовано: 02 апр. 2026
Источник: redhat
CVSS3: 4.8
EPSS Низкий

Описание

Rack is a modular Ruby web server interface. From version 3.2.0 to before version 3.2.6, Rack::Multipart::Parser unfolds folded multipart part headers incorrectly. When a multipart header contains an obs-fold sequence, Rack preserves the embedded CRLF in parsed parameter values such as filename or name instead of removing the folded line break during unfolding. As a result, applications that later reuse those parsed values in HTTP response headers may be vulnerable to downstream header injection or response splitting. This issue has been patched in version 3.2.6.

A flaw was found in Rack, a modular Ruby web server interface. Rack::Multipart::Parser incorrectly processes folded multipart part headers, failing to remove embedded carriage return and line feed (CRLF) characters. This can lead to applications that reuse these parsed values in HTTP response headers becoming vulnerable to header injection or response splitting, potentially allowing an attacker to manipulate HTTP responses.

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-93
https://bugzilla.redhat.com/show_bug.cgi?id=2454511rack: Rack: Header injection and response splitting via incorrect multipart header parsing

EPSS

Процентиль: 13%
0.00227
Низкий

4.8 Medium

CVSS3

Связанные уязвимости

CVSS3: 4.8
ubuntu
4 месяца назад

Rack is a modular Ruby web server interface. From version 3.2.0 to before version 3.2.6, Rack::Multipart::Parser unfolds folded multipart part headers incorrectly. When a multipart header contains an obs-fold sequence, Rack preserves the embedded CRLF in parsed parameter values such as filename or name instead of removing the folded line break during unfolding. As a result, applications that later reuse those parsed values in HTTP response headers may be vulnerable to downstream header injection or response splitting. This issue has been patched in version 3.2.6.

CVSS3: 4.8
nvd
4 месяца назад

Rack is a modular Ruby web server interface. From version 3.2.0 to before version 3.2.6, Rack::Multipart::Parser unfolds folded multipart part headers incorrectly. When a multipart header contains an obs-fold sequence, Rack preserves the embedded CRLF in parsed parameter values such as filename or name instead of removing the folded line break during unfolding. As a result, applications that later reuse those parsed values in HTTP response headers may be vulnerable to downstream header injection or response splitting. This issue has been patched in version 3.2.6.

CVSS3: 4.8
debian
4 месяца назад

Rack is a modular Ruby web server interface. From version 3.2.0 to bef ...

CVSS3: 4.8
github
4 месяца назад

Rack's improper unfolding of folded multipart headers preserves CRLF in parsed parameter values

suse-cvrf
около 2 месяцев назад

Security update for rmt-server

EPSS

Процентиль: 13%
0.00227
Низкий

4.8 Medium

CVSS3