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CVE-2026-4271

Опубликовано: 16 мар. 2026
Источник: redhat
CVSS3: 5.3
EPSS Низкий

Описание

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).

Отчет

This MODERATE impact use-after-free flaw in libsoup's HTTP/2 server implementation affects applications that use libsoup to handle HTTP/2 server callbacks. An attacker can trigger this by sending HTTP/2 requests that cause authentication validation failures, potentially leading to application instability or crashes. Red Hat products are affected if they leverage libsoup as an HTTP/2 server and disconnect client connections during header processing.

Меры по смягчению последствий

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

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10libsoup3Fix deferred
Red Hat Enterprise Linux 6libsoupFix deferred
Red Hat Enterprise Linux 7libsoupFix deferred
Red Hat Enterprise Linux 8libsoupFix deferred
Red Hat Enterprise Linux 9libsoupFix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-416
https://bugzilla.redhat.com/show_bug.cgi?id=2448044libsoup: libsoup: Denial of Service via Use-After-Free in HTTP/2 server

EPSS

Процентиль: 79%
0.01172
Низкий

5.3 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.3
ubuntu
8 дней назад

(A flaw was found in libsoup, a library for handling HTTP requests. Thi ...)

CVSS3: 5.3
nvd
9 дней назад

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).

CVSS3: 5.3
debian
9 дней назад

A flaw was found in libsoup, a library for handling HTTP requests. Thi ...

CVSS3: 5.3
github
9 дней назад

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).

EPSS

Процентиль: 79%
0.01172
Низкий

5.3 Medium

CVSS3