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CVE-2025-12543

Опубликовано: 07 янв. 2026
Источник: ubuntu
Приоритет: high
EPSS Низкий
CVSS3: 9.6

Описание

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without rejection, enabling attackers to poison caches, perform internal network scans, or hijack user sessions.

РелизСтатусПримечание
devel

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

esm-apps/xenial

needs-triage

jammy

needs-triage

noble

needs-triage

plucky

ignored

end of life, was needs-triage
questing

needs-triage

Показывать по

EPSS

Процентиль: 36%
0.0015
Низкий

9.6 Critical

CVSS3

Связанные уязвимости

CVSS3: 9.6
nvd
около 1 месяца назад

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without rejection, enabling attackers to poison caches, perform internal network scans, or hijack user sessions.

CVSS3: 9.6
debian
около 1 месяца назад

A flaw was found in the Undertow HTTP server core, which is used in Wi ...

CVSS3: 9.6
github
около 1 месяца назад

Undertow HTTP server core doesn't properly validate the Host header in incoming HTTP requests

CVSS3: 9.6
fstec
30 дней назад

Уязвимость ядра HTTP-сервера Undertow, связанная с ошибками механизма проверки входных данных при обработке заголовков Host, позволяющая нарушителю осуществить SSRF-атаку

EPSS

Процентиль: 36%
0.0015
Низкий

9.6 Critical

CVSS3