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CVE-2025-12543

Опубликовано: 07 янв. 2026
Источник: nvd
CVSS3: 9.6
EPSS Низкий

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.

EPSS

Процентиль: 36%
0.0015
Низкий

9.6 Critical

CVSS3

Дефекты

CWE-20

Связанные уязвимости

CVSS3: 9.6
ubuntu
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
около 1 месяца 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

Дефекты

CWE-20